Boys!Stop doing that.It s very dangerous playing in the stre

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Boys!Stop doing that.It s very dangerous playing in the street.Sorry,we----
A.play;won't B.to play;will C.playing;will D.playing;won't
第一问我把答案写上去了，为什么是playing，不是to play或play呢？理由。

首先,根据实际,we后面应该跟won't.所以排除BC.
It is +adj +for sb +to do sth是一个形式主语,它的原型是to do sth＋for sb +is +adj.
也就是说to　do　sth　在这里是动词不定式做主语,那么动名词做主语在英文上也是可以的.
所以playing和to play都可以,但选择中无to　play这个选择,所以选d

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