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单选题 17. I ________ the meeting yesterday, but some urgent matter prevented me from coming.

A

ought to attend

B

was about to attend

C

was to have attended

D

was to attend

正确答案 :C

解析

【金标尺答案】C 【金标尺解析】本题考查英语词法——动词。 was / were to have done sth.表示根据计划或安排本来要做某事,但后因故未做。故 C 项 符合题意。 A 项:ought to 表示应该做某事,不符合题意,故排除; B 项:be about to do sth.表示就要做某事。不符合题意,故排除; D 项:be to do sth.表示根据计划或安排要做某事,或打算要做某事。不符合题意,故排除;故本题答案为 C。