28. I'm afraid we'll have to work extra hours for there are still some problems ________.
| A．remaining to settle | B．remaining to be settled |
| C．remained to be settled | D．to remain to settle |
When you rewrite the paragraph, I advised you to _______ the last sentence as it is rather mileading.
| A．work out | B．leave out | C．point out | D．pick out |
All students in the class_______ a loud laugh when the professor told them a joke.
| A．let up | B．let down | C．let off | D．let out |
He knows a lot about fulm. No one in our class can _______ him in that knowledge.
| A．catch | B．suit | C．compare | D．match |
The plane _______ at 7：00 p.m.，so I have to be at the airport by 6：40 at the latest.
| A．has left | B．would leave | C．will have left | D．leaves |
There was a knock at the door. It was the second time someone _______ me that evening.
| A．had interrupted | B．would have interrupted | C．to have intrrupted | D．to intrrupt |