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It was Mary was about to go to bed when the telephone rang.A.thatB.oneC.whomD.wh

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It was Mary was about to go to bed when the telephone rang.A.thatB.oneC.whomD.wh

It was Mary      was about to go to bed when the telephone rang.

A.that

B.one

C.whom

D.what

试题答案

A

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