题目内容
【题目】Is _______ hard for you to finish the work on time?
A.that B.it C.what D.which
【答案】B
【解析】It is hard for sb to do sth的疑问形式，it为形式主语。
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题目内容
【题目】Is _______ hard for you to finish the work on time?
A.that B.it C.what D.which
【答案】B
【解析】It is hard for sb to do sth的疑问形式，it为形式主语。