问题描述:
what _____ they _____ they are ____ ____ this book
a.are ding,talk to
b.do do talk with
c.are doing talking with
d.are doing talking about
a.are ding,talk to
b.do do talk with
c.are doing talking with
d.are doing talking about
问题解答:
我来补答展开全文阅读