until用法Mary did not go to bed until she______all the houseworkA.had finished B.has finished C.finished D.finishes正确答案是选A 可是个人感觉C也对,
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题目内容：
until用法
Mary did not go to bed until she______all the housework
A.had finished B.has finished C.finished D.finishes
正确答案是选A 可是个人感觉C也对,
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