You __________ to leave until you __________ your work.
| A．won’t be allowed; have finished | B．won’t allow; finish |
| C．won’t be allowed; will finish | D．won’t allow; will finish |
She was disappointed that most of the guests ___when he ___ at the party.
| A．left, had arrived | B．left, arrived | C．had left, had arrived | D．had left, arrived |
As a graducate in computer science, he ___ to work out the problem.
| A．wouldn't have failed | B．can't have failed | C．mustn’t have failed | D．might not have failed |
I don't think ___ possible to master a foreign language without much memory work.
| A．this | B．that | C．its | D．it |
If you want to borrow a football after school, your student card ___ here.
| A．has to leave | B．must leave | C．has to be left | D．must be left |
You ___ me, but since you have,I’ll keep it secret from others.
| A．needn’t have told | B．didn't need to tell | C．wouldn't have told | D．couldn't have told |