当你问别人“你正在干什么?”,应该说:_____________。A. What is he doing?B. What are you doing?C. What do you like?
There is a Chinatown in A.China B.America C.Mexico
Therelots of children in the classroom . A.is B.are C.be
It’s about 12600 li long . It’s A.the Great Wall B.the West Lake C.the Changjiang River
Therea car in the street . A.is B.are C.be
Mexico isof America . A.south B.in the south C.north