____is very interesting to skate on the real ice.A it B It C There D This

问题描述:

____is very interesting to skate on the real ice.
A it B It C There D This

b?

答案:B
解释:it作形式主语,后面的动词不定式作真正的主语。
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B It作形式主语

选B
It形式主语 it指代skate on the real ice

B ( It's +adj.+to do sth )