Getting enough sleep is good for _______ health _______ study.
_______ 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
My teacher asked me ________ the room.( )
A.cleanB.cleansC.to clean
Is this your pencil?Yes,it's _________.( )
A.myB.meC.mine