（湖南省怀化市2014年高三第二次模拟考试）22. Tom, you play the violin so well. But I ______ you can play the violin.
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A
didn’t know
B
don’t know
C
hadn’t known
D
haven’t known
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---Don't put the waste on the ground. ---Oh, I'm very sorry. I ________ the dustbin（垃圾箱） there.
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A
don't see
B
isn't seeing
C
didn't see
D
haven't seen
---I’m sure Andrew will win the first prize in the final. ---I think so. He _____ for it months.
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A
is preparing
B
has been preparing
C
was preparing
D
had been preparing
—Have you seen Jack recently?—No. He for another company now.
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A
is working
B
had worked
C
worked
D
was working
—Ken, why do you look so tired? —I _______ myself to the climate since I came here.
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A
didn’t adapt
B
haven’t adapted
C
don’t adapt
D
hadn’t adapted