（）a little difficult for people to learn English.a.it is b.that _英语解答

（）a little difficult for people to learn English.
a.it is b.that is c.this is d.there is
应该填什么?

人气：421 ℃　时间：2019-09-28 09:14:25

解答

A.it 是形式主语,真正的主语是后面的动词不定式to learn English.