It's dangerous to let the children who are go swimming in the river.A. too young toB. so

发布时间：2020-08-14 23:46:24

It's dangerous to let the children who are      go swimming in the river. 
A. too young to
B. so young
C. not old enough to
D. so old

网友回答

A. too young to
(答案→)B. so young
C. not old enough to
D. so old
解析：若选A和C,意义不完整,因为这时let后面缺少了宾语补足语.
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