I'm worried about tomorrow's talent show．
Be confident! If you don't believe in yourself， ____ will．（ ）
A．nobodyB．anybodyC．everybodyD．somebody
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