问题描述:
be necessary for的用法
1.I can't decide which to buy.
这里可不可以用what to
2.be necessary for和be necessary to的区别?
1.I can't decide which to buy.
这里可不可以用what to
2.be necessary for和be necessary to的区别?
问题解答:
我来补答展开全文阅读