You'd better keep the windows open when you are_____ A sleeping B asleep
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![You'd better keep the windows open when you are_____ A sleeping B asleep](/uploads/image/z/9029489-41-9.jpg?t=You%27d+better+keep+the+windows+open+when+you+are_____+A+sleeping+B+asleep)
You'd better keep the windows open when you are_____ A sleeping B asleep
You'd better keep the windows open when you are_____ A sleeping B asleep
You'd better keep the windows open when you are_____ A sleeping B asleep
很高兴能够在这里回答你的问题,
B
be asleep 睡觉
当你睡觉时,你最好开着窗户.
be sleeping 是正在睡觉,
而这里是睡觉的时候,为一般现在时,所以选B
B对
be asleep 表示状态
加油!不明白再问!如果帮到你,请采纳,谢谢!
A sleeping