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Insummermilkwillquicklygobad

练习题3.12W

问题详情:

Insummermilkwillquicklygobad

In summer milk will quickly go bad _____ it is put into a fridge.

A. though              B. unless        C. because             D. once

【回答】

B

知识点:连词

题型:选择题

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