1. Mr. Brown__________ as a doctor since 2016.
A. worked                   B. has worked             C. works                      D. have worked
2. Peter is the__________ student in his class, based on his high grade.
A. smartest                  B. smarter                    C. smart                       D. more smart
3. I will be very angry with Nick if he __________ my CD again.
A. would forget          B. will forget              C. forgets                    D. forgot
4. If the teacher were here now, we’d ask him the difference _______ “science” and “technology”.
A. among                    B. of                            C. between                  D. for
5. Science is used in all corners of the world for the __________ of people.
A. interest                   B. need                        C. profits                     D. benefit
6. Peter: “Let’s have a drink. What would you like?” Jack: “___________”
A. It’s not good.         B. Some coffee, please.         C. No, it isn’t             D. certainly. Here you are.
7. Three hundred people were left _____ by the earthquake.
A. home                      B. property                  C. homeless                 D. house
8. Environmental pollution has _____ to lots of health problems.
A. caused                    B. got                          C. made                       D. led
9. The heavy rain has caused _______ in many parts of the country.
A. drought                  B. storms                     C. forest fire                D. floods
10. What can be done to protect people from _______ disasters?
A. environment        B. environmental      C. environmentally  D. environmentalist