Sally，there's a pen on the floor．Is it yours？
Oh…yes．It's_____．Thank you．（ ）
| A． |
mine |
B． |
yours |
C． |
hers |
Waiter，a glass of orange juice，please．
Sorry．Orange juice only for breakfast．（ ）
A．twill serveB．serves
C．is served
Hurry up!Jack for you to play basketball．
OK．I'm coming..（ ）
A．waitedB．is waiting
C．was waiting
What shall we do this weekend？
We'll drive to Dongjiang Lake boating．（ ）
A．to goB．goC．going
There are many tall trees on sides of the river．（ ）
A．bothB．allC．either
The harder we study，the result we will get．（ ）
A．goodB．betterC．best