You_______that mistake；you were too careless．
| A．should not make | B．should not have made |
| C．ought not have made | D．must not have made |
John received an invitation to dinner, and with his work _______,he gladly accepted it.
| A．finished |
| B．finishing |
| C．having finished |
| D．was finished |
He is very popular among his students as he al-ways tries to make them _______in his lectures.
| A．interested |
| B．interesting |
| C．interest |
| D．to interest |
We all know that, _______, the situation will get worse.
| A．not if dealt carefully with |
| B．if not carefully dealt with |
| C．if dealt not carefully with |
| D．not if carefully dealt with |
It is reported that two young officer gave their life in solving the incident. Don't you think the _______ is too great?
| A．value |
| B．cost |
| C．risk |
| D．challenge |
With our class teacher _______into the class-room, immediately attracting our attention.
| A．came a pretty girl |
| B．did a pretty girl came |
| C．did come a pretty girl |
| D．was coming a pretty girl |