作业帮It is important _us _ study Euglish hard.A.to,to B.for,to C.at,to D.for,at但我不知道为什么.
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It is important _us _ study Euglish hard.A.to,to B.for,to C.at,to D.for,at但我不知道为什么.
It is important _us _ study Euglish hard.A.to,to B.for,to C.at,to D.for,at
但我不知道为什么.
It is important _us _ study Euglish hard.A.to,to B.for,to C.at,to D.for,at但我不知道为什么.
答案：B
解释：这里用的是固定句型：It be + 形容词 + (for sb.) + to do sth. it作形式主语,动词不定式作真正的主语.
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It is important for sb. to do sth. 对某人来说做某事很重要
记住该句型就行了
这是一个固定句型啊。。
It is adj (for sb) +to do sth
B
B
for 名词，to 动词。
It is important _us _ study Euglish hard.A.to,to B.for,to C.at,to D.for,at但我不知道为什么.
it is very important
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it is very important to people
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just like 和 It is important to
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is it important换成两个词