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题型：单选题题类：模拟题难易度：普通

– What were you doing when I called you last night?
– I ______ my homework and was going to bed.

A、did B、had done C、was doing

举一反三

By the end of last year, they {#blank#}1{#/blank#} (plant) thousands of trees on the hill.

By the time of last year, she the piano for five years.

Sue didn't go to see the film with us last week because she ________________ it with her mother.

The firefighters rushed out as soon as they received the emergency call. (改为倒装句)

No sooner {#blank#}1{#/blank#} the firefighters {#blank#}2{#/blank#} the emergency call than they rushed out.

刚出发，我们很快就陷入了困境里。(no sooner; than)

By the time I got to the cinema, the film ____ for twenty minutes.

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