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You can’t imagine the difficulty he _____ onto the cliff and saving the boy in trouble.

A．had to climb

B．had climbed

C．had climbing

D．had on climbing

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相关试题

Doctors are often in ____ dilemma over whether or not to tell their patients ___ truth about their condition.

A．a ; a

B．a ; the

C．/ ; a

D．/ ; the

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-- Must you play the guitar so loudly ? I can hardly ___ my book .
--- I’m sorry. I didn’t know you were reading .

A．pay attention to

B．rely on

C．catch sight of

D．concentrate on

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Jack is late again. It is ___ of him to keep others waiting.

A．normal

B．ordinary

C．common

D．typical

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--- Thank you for keeping me ___ of everything that’s happening.
--- Don’t mention it .

A．inform

B．informed

C．informing

D．to inform

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We can hardly believe what she says because she is ___changing her mind.

A．regularly

B．eventually

C．firmly

D．constantly

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