20.John and Mary,____ sure to come to our party this evening.A.be B.are C.is D.who are 为何选A
问题描述:
20.John and Mary,____ sure to come to our party this evening.A.be B.are C.is D.who are 为何选A
答
20.John and Mary,____ sure to come to our party this evening.A.be B.are C.is D.who are 为何选A