We should look up to those scientists sent Tianzhou﹣1Cargo Spaceship(天舟一号货运飞船) to space.( )
A.whichB.whoC.what
which would you like,tea_______ milk?Tea,please.( )
A.andB.orC.but
Is tom coming by train?He ______drive his car,I'm not sure.( )
A.can'tB.mayC.must
_______ Children's Day,all the children are very happy.( )
A.toB.InC.On
What were you doing when I phoned you yesterday evening?
I _______ my homework.( )
A.was doingB.have doneC.did
Fifty yuan ________ enough.( )
A.isB.amC.are