---Look! The telephone is broken. Someone damaged it ________ purpose.
---That may be right. But perhaps it was broken _________ accident.
| A．on; by | B．by; by | C．on; on | D．by; on |
Young students are ______ not to smoke both in and out school.
| A．suggested | B．requested | C．hoped | D．invited |
He commanded that all the gates _____when it was getting dark in case thieves came in .
| A．were shut | B．must be shut | C．could be shut | D．be shut |
.Mr. Black has been teaching English in a middle school _____ he came to China.
| A．for ever | B．ever since | C．ever before | D．long before |
I know you are very ____ice-cream, but you will gain weight if you eat too much.
| A．fond of | B．tired of | C．full of | D．afraid of |
I don’t think she is a nice woman; I am _____ her empty talk.
| A．grateful for | B．tired of | C．crazy about | D．concerned about |