作业帮_____is impossible for us to finish the work in such a short time.A,this B,it为什么选B.
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_____is impossible for us to finish the work in such a short time.A,this B,it为什么选B.
_____is impossible for us to finish the work in such a short time.A,this B,it为什么选B.
_____is impossible for us to finish the work in such a short time.A,this B,it为什么选B.
（it is +形容词+for+某人+to do）表示某人做某事怎么样
你好，it在此处作为形式主语。避免句子头重脚轻，对于这种用法，以后会经常见到。见多了就会用了
觉得满意望采纳。
it is+形容词+for sb it is+形容词+to do sth
是固定句型哦