题目内容

Jack ________ go home ________ he cleaned the classroom.

[  ]

A.doesn't; until
B.doesn't; and
C.didn't; until
D.didn't; or

答案:C
解析:

句意为“杰克直到打扫完教室才回家”。“直到……才”用not... until...。又因从句为一般过去时,主句也应为过去时。故选C


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