单项选择题

I didn't hear the phone. I () asleep.

A.must be
B.must have been
C.should be
D.should have been

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单项选择题
Some of the crops failed. (), the cotton did pretty well.

A.Then
B.Besides
C.Therefore
D.However
单项选择题
(),but would you mind moving your bag

A.Wait a minute
B.Thank you very much
C.Excuse me
D.Nice to meet you
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