.The fire is very dangerous .It is very important ________ with fire

.The fire is very dangerous .It is very important ________ with fire

题目
.The fire is very dangerous .It is very important ________ with fire
The fire is very dangerous .It is very important ________ with fire.
A.to careful B for careful C to be careful D be carefu
答案
选 C

It is +形容词 +to do sth 是固定句型.
to be careful with fire 小心火

意思是:火很危险.当心火是很重要的.
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