It’s more than 8 years since I a teacher.
| A．become | B．have become |
| C．became | D．becomes |
I can't forget the time the earthquake happened in Yushu.
A. when B. which C. where
The man is talking with my teacher is Tom’s father.
| A．who | B．whom | C．whose | D．which |
If you _______ , I will _______ myself.
| A．don’t come; mop up it | B．don’t come; mop it up |
| C．won’t come; mop up it | D．won’t come; mop it up |
-- Can I join their club?
-- I am afraid you will be refused __________ you’ve passed all their tests.
| A．if | B．although |
| C．unless | D．since |
He fell off the bike ________.
| A．while he rode | B．while he was riding |
| C．while he is riding | D．while on bike |