．Afterhoursofrepair,thedrivert

．After hours of repair, the driver tried to start the machine but it ________work.

A．won’t

B．shouldn’t

C．couldn’t

D．couldn’t

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You can hardly imagine how excited I was when the day I had been looking forward to _____ at last.

A．coming

B．come

C．came

D．comes

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The effect a teacher has _______ children may be greater than that of their parents.

A．in

B．on

C．at

D．with

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—Everyone in my class passed the exam.
—Oh, really? It ________ difficult.

A．can’t have been	B．needn’t have been
C．must be	D．mightn’t be

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I ran across David while walking along the street yesterday. I ________ him for three years.

A．hadn’t seen	B．didn’t see
C．haven’t seen	D．don’t see

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—You are required by law _______ seat belts.
—Thanks for your reminding. I’ll do it right away.

A．wearing

B．being worn

C．to wear

D．to be worn

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