单项选择题

You don't know about the difficulty I had______the work then at all.

A．done
B．to do
C．for doing
D．in doing
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单项选择题
A man is being questioned in relation to the______murder.
A．advised
B．attended
C．attempted
D．admired
单项选择题
We were very disappointed at the______to our advertisement, and our products didn't sell well.
A．replies
B．response
C．answers
D．words
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