摘要: --When did you go a ?
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— When did you go to bed last night?
— ____________ I finished my homework.
A. Until B. Not until C. When D. While
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----When did you go to bed last night, Tom?
----At 10 pm. But my mother___________,
----At 10 pm. But my mother___________,
| A.is working | B.works |
| C.was working | D.worked |
— When did you go to bed last night?
— ____________ I finished my homework.
— ____________ I finished my homework.
| A.Until | B.Not until | C.When | D.While |