单项选择题

If no one () the phone, they must have gone out for breakfast.

A. answer
B. answered
C. had answered
D. has answered

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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
--Can you spare me some time I have () to tell you. --Sure.

A. important something
B. something important
C. important anything
D. anything important
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