【Becauseofthebirdflu,itisimportant____________ourfoodnow.A.tocarefulwithB.forcarefultoC.tobecarefulwithD.becarefulon】
2022-04-26 39次 反馈错误 加入收藏 正确率 : 100%
题目内容：
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
优质解答
肯定选 C
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