Mr. White promised that he would tell me the result _______ he knew it.
| A．the instant | B．the moment when |
| C．while | D．before |
Either she ______ he is fit for the job, but not me.
| A．and | B．but | C．or | D．so |
Most of us found ______ difficult to finish the work in such a short time.
| A．this | B．which | C．what | D．it |
—Do you know where Mary is?
—No, I don’t. I ______ her since last Sunday night.
| A．haven’t seen | B．didn’t see | C．won’t see | D．don’t see |
You still go to the gym every day, ______ you?
| A．do | B．don’t | C．are | D．aren’t |
The boy ______ is standing at the school gate is our monitor.
| A．which | B．whose | C．who | D．when |