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11.If we
...the use of plastic bags, our world
B. reduce - could be
...greener.
A. reduce - is
C. reduce – will be
12. She
at home yesterday morning.
B. didn't stayed
C. is staying
A. didn't stay
D. Stays
13. We...
A. aren't not
14. He
late.
C. did
.. me a lot of things last week.
B. were
D. didn't
C. doesn't bring
D. brought
A. bring
15. My brother can't swim . .he is afraid of water.
A. because
B. brings
C. and
16. That is . .book I have ever réad.
B. the most boring
B. but
D. or
.......
-A. the borest
C. the most bored
17. One way to save our environment is to ...the use of electricity.
A. save
C. stop
18. His future house. .under the ocean.
C. will be
B. reduce
D.to drive
A. was
B. could be
D. being
19. My future house will be use . .and wind power.
A. solar energy
B. hi -tech
C. roofs
D. oil