Difficult as the problem of pollution is_______,no one should just stop trying
题目
Difficult as the problem of pollution is_______,no one should just stop trying
A.to solve B.to be solve Csolving Dbeing solved
答案
a,等于as the problem of pollution is difficult to solve
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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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