帮我看一下这个英语句子
题目
帮我看一下这个英语句子
Fog and haze is an serious problem needed to solve.我想知道那个needed用的对不对
或者Fog and haze is an serious problem which need to solve呢？to用不用加？
答案
Fog and haze is an serious problem needing to be solved.
Fog and haze is an serious problem which/that needed to be solved.
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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