It's comfortable_______ on the sofa.A.sat B.sitting C.to sit
问题描述:
It's comfortable_______ on the sofa.A.sat B.sitting C.to sit
答
c 类似的还有 :It's easy /difficult to learn.等一类的。符合it's+形容词 +to do 结构
答
选C,it is comfortable to do sth
答
选B sitting
it 作为形式主语代替后面的sitting on the sofa
原句可以改为:Sitting on the sofa is comfortable....
采纳我的吧~楼主~
答
sitting
答
B、
Sitting on the sofa is comfortable~