Our teachers often tell us we can’t be because no mistake is too small for us.
| A．very careful | B．careful |
| C．so careful | D．too careless |
The classroom every day.
| A．should clean |
| B．should be cleaned |
| C．should cleaned |
| D．should be cleaning |
—A talk on American culture in the school hall yesterday afternoon.
—It’s a pity. I missed it.
| A．gave |
| B．was given |
| C．has given |
| D．is given |
Teenagers _______ allowed to drive in the street．
| A．should not be |
| B．should be not |
| C．not should be |
| D．shouldn’t |
He __________ to come to the teacher’s office.
| A．told |
| B．is tell |
| C．was told |
| D．tells |
There is some food which _________ with your fingers.
| A．can eat |
| B．must eat |
| C．can be eating |
| D．can be eaten |