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Benwasworkingonacomputer     Milliewasreadingamagazine....

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问题详情:

Benwasworkingonacomputer     Milliewasreadingamagazine....

Ben was working on a computer     Millie was reading a magazine.

A. until        B. before           C. after            D. while

【回答】

D

知识点:连词

题型:选择题

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