A. had done
B. have done
C. is doing
D. was doing
A. have
B. to have
C. having
D. had
A. aren't
B. aren't we
C. we aren't
D. aren't you
A. Yes, I'd love to
B. Yes, so do I
C. I'm very happy
D. Yes, it is
A. I'm too
B. So do I
C. Neither do I
D. So am I
A. get off
B. turn off
C. go off
D. cut off
A. wasn't used
B. didn’t used
C. never used
D. not used
A. sitting
B. quiet
C. side
D. unpleasant
A. In my opinion
B. enough
C. beautiful
D. star
A. Although
B. heavy
C. arrived
D. on time
A. the reasons for forming the deserts
B. the importance of taking care of our plants
C. the location of great forests
D. the result of cutting down the trees
A. Forests are homes for different kinds of animals.
B. Different kinds of plants might not be found in the same forest.
C. Forests are usually several square kilometers large.
D. Africa or South America are the oceans of trees.
A. more deserts and less farmland
B. the change of the world’s climate
C. the disappearance of many kinds of plants and animals
D. All of the above
A. We’ll have more and greater forests.
B. We’ll have enough land to support our people.
C. We’ll have no forests like those in the center of Africa.
D. We’ll have enough wood to do some cooking.
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