I like these books because they offer me a lot of__ knowledge．（ ）
| A． |
useful |
B． |
awful |
C． |
useless |
D． |
boring |
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
is there _________ bank near here？Yes，there is．（ ）
A．aB．anC．the
Excuse me．Is there a bus to the Olympic Center？
．You can take the No.111bus．（ ）
A．Yes，it isB．Yes，there is
C．I'm not sureD．Sorry，I have no idea