—Miss Zhang seems quite familiar with Yunnan Province.
—Don't you know?She ________ a town school there as a volunteer teacher for over 2 years.( )
A.is inB.has gone to
C.has been inD.has been to
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
You'll have a great time ________ you go to the party.( )
A.soB.ifC.although