中文谷-----Oh,mybackpack!MaybeIleftitinthelibrary. ----M...
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问题详情：
-----Oh, my backpack! Maybe I left it in the library.
---- My goodness! You ______ things behind.
A. are always leaving B. always leave
C. have left D. haven’t left
【回答】
A
知识点：动词时态与语态
题型：选择题
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