The noise of the desks _____ could be heard in the next classroom.
| A．being opened and closed | B．opened and closed |
| C．having been opened and closed | D．to be opened and closed |
Was it because it snowed last night ____ he didn’t come?
| A．why | B．that | C．when | D．then |
.The purpose of the research had a more important meaning for them than ______.
| A．ours | B． with us | C．for ours it had | D．it did for us |
Believe it or not, he came _______.
| A．drunk home last night | B．home last night drunk |
| C．home drunk last night | D．last night home drunk |
Work starts every day at 7 a.m. and goes on until late afternoon _____ a break at midday .
| A．by | B．with | C．for | D．after |
Perhaps this is the only market ____ you can get such cheap goods.
| A．that | B．of which | C．by which | D．where |