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题型：单选题题类：模拟题难易度：普通

— How long has the train been away?
— Sorry. I don't know. By the time I got here, the train ________.

A、has left B、was leaving C、had been away D、had left

举一反三

Tom by the time I got to the party.

By the time I got to school, I realized that I ________ my backpack at home.

Catherine {#blank#}1{#/blank#} (finish) the letter before her mother came into her bedroom.

I {#blank#}1{#/blank#} (turn off) all the lights before I {#blank#}2{#/blank#} (go) to bed.

Paul {#blank#}1{#/blank#} (go) out with Jane after he {#blank#}2{#/blank#} (make) a phone call.

The banks had {#blank#}1{#/blank#}(close) to customers so Mr Smith couldn't get any money out.

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