The classroom is very dirty.it is hard to clean it和it is har

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The classroom is very dirty.it is hard to clean it和it is hard to clean选哪个有什么区别

秃顶高手来了
哈哈,考得就是不定式哈.
its hard to clean ,所谓""反射性不定式"",其实就是to do it is hard .
its hard to do it ,不用.因为上面的更简洁,而且it 还重复了.--用这个会被美国佬笑话的

The classroom is very dirty.it is hard to clean it和it is har 单元测试题4.The classroom is very dirty today.It is hard _______. The classroom is dirty,snd it needs ______(clean). The y____ is very dirty,would you please clean it? The classroom is very dirty .You must keep it _____. it is hard for only one girl to keep the classroom to clean The room is very dirty today.It's hard——.A.cleaning B.to cle 难The classroom is vevy dirty today.It is hard A.cleaning B.t It is very()(clean). Please ______(clean) the table,it is too dirty. the room is so dirty _we clean it? the strip holder is dirty ,please clean it!