A:Whose dog is it?B:_______our dog._______name is Rex.

问题描述:

A:Whose dog is it?B:_______our dog._______name is Rex.

English is not easy to learn.(而不是to learn it) 英语不容易学。 He如果是狗做主语也可以用被动语态,比如I think the dog is easy to be

It's它是; Its它的

It's Its