English is ____ a bridge to so____knowledgeI found _____too hard _英语解答

English is ____ a bridge to so____knowledge
I found _____too hard to learn English grammer.
A.that B.it c.this D.that's
要理由

人气：208 ℃　时间：2020-03-22 05:07:03

解答

D.that's
too hard to 太难而不能.用that,this要加句子吧.
用B的话,肯定要加动词,也就是用it is.