Exercise 3: Choose the best answer.
6. I think technology __________ make the world a better place.
A. will B. won’t C. have to D. is going to
7. You usually need a _____ to go from one country to another.
A. postcard B. passport C. permission D. allow
8. Are you interested _____ Taekwondo?
A. in B. about C. at D. of
9. I _____ aerobics three times a week at my local gym.
A. play B. go C. do D. take
10. Air ______ is a serious problem that our city is facing due to our own activities.
A. pollute B. polluted C. pollution D. pollutant