The athletes competed ________ each other for gold medals in the Olympic Games.
| A．against | B．between |
| C．for | D．over |
He must have had an accident, or he here then.
| A．would have been |
| B．had been |
| C．should be |
| D．could be |
If only you him what I said, everything would have been all right.
| A．didn’t told |
| B．hadn’t told |
| C．would not tell |
| D．would have not told |
It’s high time we our attention to this problem．
| A．turned |
| B．turn |
| C．had turned |
| D．would turn |
It’s necessary that he a recognized qualification .
| A．has |
| B．have |
| C．had |
| D．having |
We demanded that we of any change in the plan.
| A．informed |
| B．would be informed |
| C．be informed |
| D．had been informed |