It's the first time this term we ________ an examination after class in the afternoon．A.didn't haveB.aren't havingC.don't haveD.haven't had
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D解析考查动词时态。It(This/That)is(was)the first/second…time that…是某人第几次做某事，在这个句子结构中that从句的谓语动词常用完成时，但It后是is时，that从句谓语用现在完成时；是was时用过去完成时。