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 |
Isn't it lovely to think that I __________ myself on the sunny beach at this time tomorrow?
| A．am enjoying |
| B．will enjoy |
| C．shall enjoy |
| D．will be enjoying |
-Would you like to help me clean the lab at 4 o'clock this afternoon?
-I would like to, but I __________ listening practice then.
| A．will do |
| B．have been doing |
| C．am doing |
| D．will be doing |
-I'm going to attend your lecture at 9： 30 tomorrow morning.
-I regret to tell you that when you arrive, it will have ended and I __________ questions with my students.
| A．would discuss |
| B．will discuss |
| C．am discussing |
| D．will be discussing |
-I'll come to see your performance at 9：00 tomorrow evening.
-I'm sorry, but by then my performance __________ and I __________ re-porters in the meeting room.
| A．will have ended; will be meeting |
| B．will end; will meet |
| C．will be ended; am going to meet |
| D．is to end; will meet |
You'd better not ring me up between 9:00 and 10:00 tomorrow. I __________ an important meeting then.
| A．have |
| B．had |
| C．was having |
| D．will be having |