单项选择题

Some students like staying up Date into the night, ______ their lessons for the coming final examination.

A．to prepare
B．prepare
C．preparing
D．were preparing

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单项选择题

Is this the air-conditioner you wish ______

A．to have repaired
B．to have repaired it
C．to have it repaired
D．to have been repaired

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

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