Because of the bird flu,it is important ____________ our food now.
题目
Because of the bird flu,it is important ____________ our food now.
A.to careful with B.for careful to C.to be careful with D.be careful on
答案
肯定选 C
举一反三
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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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