题目内容
Between two classes, we usually have a ________break to help to rest our brains. We should open the windows to breathe some fresh air during the break.
A.15-minutes B.15 minute's C.15-minute
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题目内容
Between two classes, we usually have a ________break to help to rest our brains. We should open the windows to breathe some fresh air during the break.
A.15-minutes B.15 minute's C.15-minute