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题型：单选题题类：真题难易度：普通

If you miss this chance, it may be years ____ you get another one.

A . As B . before C . since D . after

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【解析】

组卷次数：155次 +选题

举一反三

Be careful ______ you'll make fewer mistakes.

The reason she gave for being late was her car broke down on the way.

The girl was then hit a second time by another van _________ an elderly trash collector came to her aid, according to some witnesses.

— Why didn't you help the little boy?

—Oh, he had struggled to his feet ______ I could run over and offered any help.

It ________ long before we ________ the result of the experiment.

Hardly had he arrived{#blank#}1{#/blank#} it began to rain.

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