单项选择题

Did you have trouble （） the swimming pool.

A．to have found
B．to find
C．with
D．in finding

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单项选择题
I regret（）you the sad news since you are now in so deep sorrow.

A．to tell
B．telling
C．being told
D．tell
单项选择题
Rarely （） by so many students.

A．so much time has been wasted
B．has so much time wasted
C．has so much time been wasted
D．has wasted so much time
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