题目内容
【题目】I won't do it ______ you come back.
A. whenB. until
C. whileD. after
【答案】B
【解析】
句意:直到你回来我才做这件事。
when当……时候,until直到,while然而,after在……之后。not……until……“直到……才……”,故选B。
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