The Browns are busy ___ ready for Christmas Day.A.get B.getting C.got D.为什么
问题描述:
The Browns are busy ___ ready for Christmas Day.A.get B.getting C.got D.
为什么
答
be busy
doing
忙着做某事
答
选B
be busy doing sth.
答
选B
be busy doing sth 固定词组搭配