. Professor Smith and Professor Brown will _____ in giving the class lectures.A．

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. Professor Smith and Professor Brown will _____ in giving the class lectures.

A．exchange

B．alter

C．shift

D．alternate

答案

解析

略

举一反三

. He _____ his engagement just before the wedding.

A．broke out	B．broke away from
C．broke off	D．broke up

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. Your essay is quite good: just _____ it _____ with a few illustrations and quotations.

A．put .. up	B．touch .. up
C．cut .. out	D．write .. off

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When the big bills for mother’s hospital care came, father was glad he had money in the bank to _____.

A．fall short of	B．fall through
C．fall back on	D．fall in with

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---How can you use my computer without my permission?
---Oh, I ________to tell you. I hope you don’t mind.

A．forget

B．forgot

C．had forgotten

D．am forgetting

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.Nobody noticed the thief slip into the house because the lights happened to_____.

A．be put up

B．give in

C．be turned on

D．go out

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