改同义句:At last,children came up with a good solution to the problem.

问题描述:

改同义句:At last,children came up with a good solution to the problem.
At last,children _____ _____ a good solution to the problem.
答案填thought up,请问能不能填thought out?为什么?

thought up,意为:想出.相当于 come up with.
一般没有thought out这样的搭配.
新目标九年级的知识点.