Teachers recommend parents_their children under 12 to ride bicycles to school for safety.
not allow
do not allow
mustn't allow
couldn't allow
B答案不是强调么?
人气：484 ℃ 时间：2020-05-23 15:55:41
解答
recommend sb to do sth
否定则在前面加not
则是recommend sb not to do sth 固定用法
希望能够帮到楼主
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