The problem is difficult for a little girl to

来源：百度知道编辑：UC知道时间：2024/05/17 06:42:21

A.work out B.work it out C.work out it

A.
若加"it",只能理解为"problem",会导致句子结构混乱,无法理解.
但可以说"It is difficult for alittle girl to work out the problem."其中"it"是形式主语,不是指"problem",而是指整个后面的"for alittle girl to work out the problem".

a 不加宾语

显然是A嘛

a
sth is adj for sb to do

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