Chọn đáp án đúng và giải thích

Question 21: If I______the rain yesterday, I______ill.

A. had not caught / would have been                 B. had not caught / would have not been

C. have not caught / were not                            D. have not caught / would have been

Question 22: What______if there______a serious nuclear accident.

A. will happen / was                                           B. happens / were

C. would happen / were                                     D. would happen / had been

Question 23: If I hadn't stayed up so late last night, I______so tired this morning.

A. don't feel                  B. felt                            C. didn't feel                      D. wouldn't have felt

Question 24: I______in terrible trouble right now if you hadn't helped me.

A. am                            B. will be                      C. would be                       D. would have been

Question 25: If I had a computer, I______the assignment last night.

A. finished                                                          B. have finished

C. would have finished D. had finished

Question 26: If you______harder, you'd have passed the exam.

A. had studied               B. have studied             C. studied                          D. study

Question 27: If you had lots of money, what______?

A. do you do                 B. will you do               C. would you do                D. have you done

Question 28: I'd______out with you if I weren't so tired.

A. go                             B. went                          C. had gone                              D. will go

Question 29: I'm sure your parents would have been happier if you______harder

before that important exam.

A. work                         B. worked                     C. have worked                          D. had worked

Question 30: Tom______so careless if he'd known what would happen.

A. would have been                                            B. wouldn't have been

C. would be                                                        D. wouldn't be

Question 31: If she______on time, I would have been surprised.

A. arrived                      B. have arrived             C. had arrived                          D. would arrive

Question 32: We wouldn't______the bus if we'd left home earlier.

A. have missed             B. had missed               C. will miss                               D. would miss

Question 33: If John had studied more, he______better marks.

A. gets                           B. will get                     C. would get                      D. would have got

Question 34: If he had tried harder, he might______.

A. succeed                    B. have succeeded        C. be success                          D. will succeed

Question 35: If you had saved some money, you______so hard up now.

A. aren't                        B. won't                         C. wouldn't be                   D. wouldn't have been

Question 36: Why didn't you tell me? If you______me, I would have helped.

A. tell                            B. told                           C. have told                                D. had told

Question 37: If he______the money, he wouldn't be in prison now.

A. hadn't stolen             B. didn't steal                C. had stolen                            D. stole

Question 38: If Tim______so fast, his car wouldn't have crashed into a tree.

A. didn't drive               B. hadn't driven            C. haven't driven               D. drives

Question 39: What a bad luck! If Nam______over, he would have won the race.

A. doesn't fall               B. didn't fall                  C. hasn't fallen                   D. hadn't fallen

Question 40: If you______me last week, I would have been able to come.

A. invited                      B. had invited               C. would invite                  D. would have invited

Question 41: I'm sure your letter hasn't arrived yet. If it had come, I'm sure I______it.

A. will notice                B. noticed

C. would have noticed  D. would notice

Question 42: Why didn't you phone? If I had known you were coming, I______you

at the airport.

A. would have met       B. would meet              C. met                                D. had met

Question 43: It's a pity you missed the party. If you______, you would have met my teacher from Australia.

A. came                         B. have come                C. come                             D. had come

Question 44: I wouldn't have resat the exam if I______harder.

A. study                        B. studied                      C. had studied                          D. would have studied

Question 45: If Jane______, I wouldn't have been able to move the table.

A. didn't help                B. hadn't helped            C. hasn't helped                 D. wouldn't help

Question 46: Unless you______me about Sue's hair, I wouldn't have noticed.

A. had told                    B. hadn't told                C. told                                D. didn't tell

Question 47: "If I______and my life depended on the solution, I would spend the first 55 minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes." Albert Einstein

A. have an hour to solve a problem                   B. had an hour solving a problem

C. had had an hour to solve a problem              D. had an hour to solve a problem

Question 48: If he had spent his youth learning something, he______himself for his lack of knowledge now.

A. will not blame                                                B. would not blame

C. would not have blamed                                 D. would blame

Question 49: If he______this homework to do, he would have gone out with his friends.

A. had not                     B. didn't have                C. had had                                D. hadn't had

Question 50: Were my grandfather alive, he______learning something new. He was really a studious.

A. will be                      B. would be                   C. would have been           D. will have been