The boss____________ the worker how to do it, or the accident couldn't have happened.
| A．can't have told | B．ought to tell |
| C．could have told | D．mustn't have told |
If you are to treat your friends to dinner in a good restaurant at the weekend, you’d better book a table ___________.
| A．ahead | B．before | C．ahead of | D．in advance |
It remains ________ whether Jim will be fit enough to play in the finals.
| A．seen | B．to be seen | C．seeing | D．to see |
Not only to stay at home , but he was also forbidden to watch TV.
| A．that he was forced | B．he was forced |
| C．was he forced | D．was forced he |
We should take exercise now and then. I believe we will ___________ it a lot.
| A．benefit from | B．benefit | C．do good to | D．be beneficial for |
_____by the beauty of our city, the Australian teacher decided to work in our school for another year.
| A．Attracting | B．Attracted | C．To be attracted | D．Having attracted |