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-Was his father very strict with him when he was at school? -Yes.He had never pr

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-Was his father very strict with him when he was at school? -Yes.He had never pr

-Was his father very strict with him when he was at school?

-Yes.He had never praised him ________ he became one of the top students in his grade.

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A.after

B.unless

C.until

D.when

试题答案

答案:C

解析:

until跟前面的never构成not…until…结构.

标签:washewhenat