Excuse me! Is this your pen？
No， it's not _____． It's Tom's．（ ）
| A． |
hers |
B． |
his |
C． |
mine |
D． |
yours |
The telephone _______ by Alexander Graham Bell．（ ）
A．was inventedB．invents
C．invented
I _______ Anna since three years ago．（ ）
A．knewB．knowC．have known
If I go to the movie， I _______ my homework on time．（ ）
A．didn't finishB．don't finish
C．won't finish
I like Chinese， _______ I don't like math， because it's not easy to learn it well．（ ）
A．andB．butC．or
I think it's impolite _______ others waiting．（ ）
A．to keepB．keepingC．keep