Question 21: You . forget to meet the deadline. The boss is very strict about
being on time.

A. don't have to          B. can't                         C. should                     D. mustn't

Question 22: " How old do you think Tom is?" - " He______ 17 because he is studying with my brother.

A. might be                 B. must be                   C. may be                    D. can be

Question 23: This information is very precious. You______reveal it.

A. must                        B. can                           C. needn't                    D. mustn't

Question 24: You______take along some cash in case of the restaurant______ accept credit cards.

A. had better - may not                                   B. could - should not

C. has to - must not                                         D. can - needn't

Question 25: You ______have many chances about the future job if you spoke English fluently.

A. could                       B. would be able to    C. need                        D. can

Question 26: "______helping me take care of my child this morning? "

A. Can you                  B. Why don't you       C. Would you mind   D. Could you

Question 27: In the future, global warming______a level at which human life will become impossible.

A. will be increasing at                                   B. increases in

C. may increase to     D. will increase

Question 28: You______wear an umbrella because it isn't raining outside.

A. may                         B. mustn't                    C. should                     D. needn't

Question 29: Before anyone steps on that stage, you______make sure that it is secure.

A. would better          B. had better               C. would rather          D. would prefer to

Question 30:______you looking after that cat for me while I am away?

A. Shall                        B. Should                    C. Will                         D. Must

Question 31:______I post that letter for you on the way to the office?

A. Would                     B.Will                          C.Do                             D. Shall

Question 32: You're going to set up the equipment in a minute,______give you a hand?

A. Shall I                     B. Will I                       C. Would I                   D. Do I

Question 33: “Are these gloves necessary?" "Yes. You______use this chemical without gloves. It will bum your skin."

A. mustn’t                   B. don't have to           C. could not                D. need not

Question 34: You______so fast, or you might have an accident.

A. don't have to drive                                       B. shouldn't have driven

C. had better not drive                                    D. mustn't have driven

Question 35: " Did you do all the tasks yesterday?" - " No, I______it, but I spent too much time doing the first task."

A. must have done                                           B. could have done

C. shouldn't have done                                   D. needn't do

Question 36: When you have a small child in the house, you______leave small objects lying around. Such objects______be swallowed, causing serious injury or even death.

A. needn't - may                                               B. should not - might

C. should - must                                               D. mustn't - can't

Question 37: I got lost very often when I was in Hanoi. I______a street map while I was living there.

A. needn't have bought                                   B. have to buy

C. should have bought                                    D. would have bought

Question 38: My supervisor is angry with me. I didn’t do all the work I______last week.

A. must have done                                           B. may have done

C. should have done                                        D. need to have done

Question 39: She______for her parents' support during her university education, but she preferred to work part-time and support herself.

A. should have asked                                       B. could have asked

C. must have asked                                          D. ought to ask

Question 40: “Peter passed his exam with a flying color.” “______.”

A. He needs studying harder                          B. He must have studied very hard

C. He was too lazy to succeed                       D. He can't have studied very hard

Question 41: He has been working for 10 hours. He______be very tired now.

A. must                        B. needn't                    C. has to                      D. should

Question 42: You know how upset she was that night. You ______ her that

everything was all right. Why were you so cruel?

A. should tell              B. ought to tell            C. must have told       D. should have told

Question 43: You______pass an examination before working in that company.

A. must                        B. should                     C. can                           D. might

Question 44: Why are you still here? You______been helping Dianna in the yard.

A. must have               B. would have            C. might have             D. should have

Question 45: Alter a number of incidents with the police, we decided to close down the club. But now I think that maybe we______it open.

A. ought to keep         B. should have kept   C. should keep            D. should rather keep

Question 46: Jenny's jewelry was precious! It______have cost a fortune.

A. can                          B. should                     C. need                        D. must

Question 47: Augmented reality and virtual reality devices______be used in a

variety of ways including visual representations of blueprints or for simple things like virtual team meetings.

A. can                          B. must                        C. have to                    D. has to

Question 48:______I borrow your pen for a minute? - Sure. You______keep it if

you want to.

A. May - could           B. Might - can            C. Could - should       D. May - can

Question 49: As the repair turned out to be so complicated, they______much earlier. But nobody expected it would be so time-consuming.

A. ought to have started                                  B. should start

C. might start                                                    D. must have started

Question 50: “You______your temper like that, Sue. It was inexcusable."

A. shouldn't have lost                                       B. shouldn't lost

C. can't have lost                                              D. mightn't have lost

Question 51: You______so much money at the weekend. It was wasteful.

A. can't have spent                                           B. shouldn't spend

C. shouldn't have spent                                   D. mustn't spend

Question 52: It’s your own fault. You______them to go out on their own; they are still new here.

A. mustn't have allowed                                 B. can't allow

C. shouldn't allow                                            D. shouldn't have allowed

Question 53: They were travelling on the same train so they______. But, of course, we don't know if they did.

A. could meet             B. may have met         C. might meet             D. should probably meet

Question 54: She______cook a meal for her family when she was just twelve years old.

A. can                          B. could                       C. should                     D. need

Question 55: Jessica looks very tired. She______have stayed up late to finish her assignment last night.

A. would                      B. must                        C. will                          D. should