It was not until one night_____we were doing our cleaning-up I got curious and wanted to see what was on the top floor．
| A．that；that | B．when；so | C．that；because | D．when；that |
Many new workers______and in six month they will be sent to build a new railway.
| A．are being trained | B．are training | C．will train | D．will be trained |
—Oh, I______your camera. Is it all right if I bring it to you tomorrow?
—All right.
| A．forget | B．have forgotten | C．forgot | D．had forgotten |
Was it because she was ill______she didn’t go to attend the meeting?
| A．what | B．which | C．as | D．that |
The machine has been used for several years. It needs______.
| A．to repair | B．repaired | C．repair | D．repairing |
Be quiet______you will wake the whole house!
| A．or | B．and | C．so | D．but |