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In summer milk will quickly turn sour it is put into a refrigerator.A.thoughB.unlessC.becauseD.once

编辑:chaxungu时间:2026-04-24 13:01:16分类:高中英语题库

In summer milk will quickly turn sour ________ it is put into a refrigerator.
A.thoughB.unlessC.becauseD.once在线课程B