The discovery of these tombs is ______ for scholars' studying Chinese history.
| A．of very important |
| B．great significant |
| C．of great significance |
| D．greatly importance |
There was plenty of time.He.
| A．couldn’t have hurried | B．mustn’t hurry |
| C．needn’t have hurried | D．can’t have hurried |
John,look at the time.you stop playing the piano at such a late hour?
| A．Must | B．Can’t | C．May | D．Need |
But for the traffic jam,welong ago.
| A．will have arrived | B．should | C．had arrived | D．would have arrived |
Whenever the teacher was not here,the childrenmake a lot of noise.
| A．will | B．would | C．were to | D．were going to |
—I promise that sheget a nice present on her birthday.
—It will be a big surprise to her.
| A．should | B．must | C．would | D．shall |