题目内容
—_____we keep the window _____ all the time?
—No, you don’t have to .
A. Can; opening B. May; opened
C. Must; opening D. Could; to open
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题目内容
—_____we keep the window _____ all the time?
—No, you don’t have to .
A. Can; opening B. May; opened
C. Must; opening D. Could; to open