题目内容：

I thought __ very important to read english every day.A it B its C it is D that 为什么选A?

优质解答

答案：A
解释：it在此作形式宾语,真正的宾语是后面的动词不定式结构.答案C 要改成it's,因为这里只有一个空啊!
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