–What’s that noise?
–Oh, I forgot to tell you. The new machine ______.
| A．was tested | B．will be tested | C．is being tested | D．has been tested |
You can only tell the news to Tom,Jack and Bill,and __________ it should be kept.
| A．among them | B．among whom | C．between them | D．between whom |
I’m afraid none of us can __________ the machine that has been imported from abroad.Which of the following is wrong?
| A．work | B．run | C．turn | D．operate |
In Britain,sales of cigarettes have been reduced __________ 30% in the past ten years.
| A．for | B．to | C．from | D．by |
Whenever you are to walk on the ice,__________ that it is solid and safe enough.
| A．examine | B．check | C．try | D．make |
It is a __________ that you missed such a wonderful concert.
| A．shame | B．pity | C．regret | D．mistake |