题目内容

They had succeeded ()the task in time.
A: at completing
B: to complete
C: in completing
D: complete

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Sixty million people who ()in rural areas are moving to cities every year.
A: lived
B: lives
C: living
D: live

It's wet on the ground. It ()yesterday evening.
A: must be
B: should be
C: must have rained
D: should have rained

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A: I have no idea
B: No, no. I can carry it myself
C: That's a good idea
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A: I agree. Let's look for a bigger one
B: You're quite right. What a good idea
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