Question

【题目】—Your picture is so wonderful.

—I had worked for 10 hours _____ I finished drawing it.

A.whenB.afterC.sinceD.before

Answer 1

【答案】D

【解析】

句意：——你的画太美了。——我画完它之前已经工作了10个小时。

考查连词。when当……时；after之后；since因为；before在……之前；根据“I had worked for 10 hours _____ I finished drawing it.”可知我画完它 已经工作了10个小时，可推测出此处是“在……之前”，故选D。