VI. Choose the best answer to complete the sentences.
1. People _______ go on holiday to Mars some day.
A. can B. must C. might D. should
2. I’m fascinated by the house that looks like _______ UFO.
A. the B. a C. an D. 0
3. _______ people do not necessarily have of all.
A. The happiest - the best B. happiest - best
C. The happiest - best D. happiest - the best
4. I believe that people _______ definitely make the world greener in the future.
A. will B. can C. won’t D. might
5. If Nam _______ plastic bags, he will help protect the environment.
A. didn’t use B. will use C. uses D. doesn’t use
6. What _______ if we live in the noisy surroundings?
A. happened B. will happen C. happens D. happen
7. You _______ pass the exams to study in higher classes.
A. might B. mightn’t C. must D. should
8. With high-end washing machines, we provide the _______ laundry service.
A. cleaner and safest B. cleaner and the safest
C. cleanest and the safer D. cleanest and safest
9. The next generation of robots _______ use electricity, but solar power.
A. didn’t B. don’t C. won’t D. couldn’t
10. The beach will be full of garbage _______ dustmen don’t collect it.
A. so B. if C. but D. unless