--- I didn’t believe you made such a mistake.
---Oh, I’m sorry. I did it ___________. I’m serious.
| A．on purpose | B．by accident | C．by the way | D．as for |
We’re looking forward __________ the photo exhibition.
| A．to visiting | B．to visit | C．to having visited | D．visiting |
You will _______ your health if you work so hard，eat a little food and sleep badly．
| A．fail | B．improve | C．help | D．endanger |
My brother，______ his classmates often made fun a few years ago，is now studying in England．
| A．of whom | B．who | C．about whom | D．whom |
一Do you think I should apply for the job?
一Why not? If you make an effort，the _______ are that you’11 be employed．
| A．results | B．hopes | C．wishes | D．chances |
The surface of the table ______ smooth enough．
| A．hash’t felt | B．isn’t feeling | C．doesn’t feel | D．isn’t felt |