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Thefirestartedonthesecondflooranditwasn'tlong

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问题详情:

Thefirestartedonthesecondflooranditwasn'tlong

The fire started on the second floor and it wasn't long ______ the whole building was burned down.

A. while    B. when

C. after    D. before

【回答】

D

知识点:连词

题型:选择题

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