中文谷WhenIenteredtheclassroominahurry,IsuddenlyrealizedI
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问题详情：
When I entered the classroom in a hurry, I suddenly realized I _____ all my homework at home.
A. has left B. left C. had left D. was leaving
【回答】
C
知识点：过去完成时及其被动式
题型：选择题
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