My colleague has been recovering gradually since the operation, and it wont’ be long ______ he comes back to work．
| A．before | B．since | C．after | D．when |
—Why are your eyes so red? You________have slept well last night.
—Yeah，I stayed up late writing a report.
| A．can’t | B．mustn’t |
| C．needn’t | D．won’t |
Harry is feeling uncomfortable.He ________too much at the party last night.
| A．could drink | B．should drink |
| C．would have drunk | D．must have drunk |
I ________ myself more－it was a perfect day.
| A．shouldn’t have enjoyed |
| B．needn’t have enjoyed |
| C．wouldn’t have enjoyed |
| D．couldn’t have enjoyed |
—What are you doing this Saturday?
—I’m not sure，but I________go to the Rolling Stones concert.
| A．must | B．would |
| C．should | D．might |
No one ________be more generous; he has a heart of gold.
| A．could | B．must |
| C．dare | D．need |