1.A.Why not go to the office and ask your teacher for help?B.I _.But didn’t find her there.A.will B.would C.have D.shall 2.Today the forests have almost gone.People must __ down too many trees.A.stop from cutting B.stop to cut C.be stop

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1.A.Why not go to the office and ask your teacher for help?B.I _______.But didn’t find her there.A.will B.would C.have D.shall 2.Today the forests have almost gone.People must ________ down too many trees.A.stop from cutting B.stop to cut C.be stop
1.A.Why not go to the office and ask your teacher for help?
B.I _______.But didn’t find her there.
A.will B.would C.have D.shall
2.Today the forests have almost gone.People must ________ down too many trees.
A.stop from cutting B.stop to cut
C.be stopped from cutting D.be stopped to cut
每题都必须给出选的原因,否则将不予给分,

1.A.Why not go to the office and ask your teacher for help?B.I _______.But didn’t find her there.A.will B.would C.have D.shall 2.Today the forests have almost gone.People must ________ down too many trees.A.stop from cutting B.stop to cut C.be stop
1.C
前面一个人提出解决方法,但是后面的人说他去找过老师了,老师不在
应该用完成时态
2.C
现在森林正在消失,人们必须停止过度砍伐
用被动语态,并且要跟介词from

1选C.
因为是表示过去做过的事对现在有结果，有影响，用完成时。
2选A
不需要被动语态，而且stop to cut是停下来，去砍的意思，所以排除，则选A

C 表示已经去找过老师了，是过去完成时
A stop from doing是表示停止做某事，from一般省略，stop to do表示停下来去做某事

1 D(why not=shall we,第一人称用shall,第二人称用will)
2 C(stop to do停下做什么事;stop doing停止做什么事.因为是被迫停下,所以用被动语态,选C)

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