______ interesting to play football and play tennis.AThey are B It is

问题描述:

______ interesting to play football and play tennis.AThey are B It is

B
It 作形式主语,真正的主语是动词不定式 to play football and play tennis。

祝你开心。

嗯,楼上说的都很好

答案选B,这里缺一个形式主语,只能用it is,这句话实际主语是 play football and play tennis

选B, it is interesting to do sth.

选B
It is .
It作形式主语~
意思是踢足球和打网球很有趣~