单项选择题

The star has been playing basketball（）he was a boy.

A. during
B. when
C. since
D. as

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单项选择题
It（）be quite late now, we should go and catch the last bus.

A. can
B. must
C. would
D. may
填空题
What did Mrs. Black take back with herShe took back a picture with a（）on it.
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