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【单选题】

_____ in a heavy rain, the teacher fell ill and couldn’t but ______ for a leave.

A.
Caught; to ask
B.
Catching; ask
C.
Catching; to ask
D.
Caught; ask
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参考答案:
参考解析:
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举一反三

【单选题】How much time do you often spend _________ English every day?

A.
to practice speaking
B.
practicing to speak
C.
on practicing to speak
D.
practicing speaking