I found_____difficult to finish the work in such a short time.A)it B)that C)this D)it's

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I found_____difficult to finish the work in such a short time.A)it B)that C)this D)it's
I found_____difficult to finish the work in such a short time.A)it B)that C)this D)it's

I found_____difficult to finish the work in such a short time.A)it B)that C)this D)it's
A)it

答案：A
解释：it 作形式主语，动词不定式作真正的主语。
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A it 我发现在这么短的时间内完成这项工作很困难

A
it作形式宾语，代表to finish the work

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