It's dangerous to let the children who are__go swimmingA.so young toB.so youngC.not old eough toD.too young towhy choose

问题描述:

It's dangerous to let the children who are__go swimming
A.so young to
B.so young
C.not old eough to
D.too young to
why choose

It's dangerous to do..做什么事情很危险。
let the children go swimming. 让这些孩子去游泳。(Let sb. do sth.句型)
因此,It's dangerous to let the children go swimming.让这些孩子去游泳是很危险的一件事。
who are so young修饰the children,表示这么小的孩子。
整句话就是,让这些这么小的孩子去游泳是件很危险的事。

Let somebody do sth,而不是Let somebody to do sth.
who are so young 这个主语从句是用来修饰the children的,如果把这个主语从句去掉,只剩下Let句型,就是Let the children go swimming,这句话是正确的,如果选择A,就成了Let the children to go swimming,这与Let句型不符.然后C,D答案很明显是不正确的!所以选择B!