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It won't be long he comes to our help. [ ] A.beforeB.since C.afterD.when

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It won't be long he comes to our help. [ ] A.beforeB.since C.afterD.when

It won't be long ________ he comes to our help.

[]

A.beforeB.sinceC.afterD.when

试题答案

答案:

解析:

固定句式用法。