III. Choose the word or phrase (A, B, C or D) that best complete the sentences.
6. If anyone _______________ him I _______________ back at 9 o’clock.
A. calls/ tell / will be
C. is calling / tells / am
B. called / telling / would be
D. will call / to tell / am
7. We shouldn’t _______________ rubbish on the street.
A. throw
B. reuse
C. wrap
D. turn off
8. _______________ means giving things to people who are in need.
A. Swap
B. Charity
C. Reuse
D. Recycle
9. If we use _______________ paper, we will save a lot of trees.
A. fewer
B. less
C. more
D. much
10. You should put the food in a reusable box _______________ plastic bag.
A. by
B. instead of C. because of
D. without
11. _______________you hear the fireworks from your house last night?
A. Can't
B. Could
C. Can
D. will
12. Yesterday, my mother_______________ me a robot toy on my birthday.
A. give
B. gave
C. giving
D. to give
13. My father always _______________ coffee at home instead of going to the coffee shop.
A. do
B. does
C. make
D. makes
14. “_______________do you think about the new kinds of robots?”
A. How
B. What
C. Why
D. When
15. We waste a lot of money and lime researching and making robots”.
A. I think not.
B. I don’t think so. C. I agree with.
D. I don't hope so.
IV. Fill each gap of the following sentences with a suitable preposition.
16. They often play catch _______________recess.
17. We could go _______________ the trip because we could afford it.
18. I haven’t been able to concentrate recently _______________ work. I don’t know what it is
at eleven o’clock, after the fog had lifted.
19. The plane couldn’t take _______________ any help last night.
20. My grandfather was able to walk _______________