Ithat all windows are shut.I did it.A. make sureB. am sureC. make clearD. am clear

发布时间：2020-08-17 13:43:16

I    that all windows are shut.I did it.
A. make sure
B. am sure
C. make clear
D. am clear

网友回答

A. make sure
(答案→)B. am sure
C. make clear
D. am clear
解析：be sure that 确信，保证；make sure that 确保。
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