Not having found __________，he had to go home with empty hands．
| A．something | B．everything | C．anything | D．nothing |
--- Congratulations!
---Thank you. If it hadn’t been for your help, we ____ in the experiment.
| A．will never succeed | B．wouldn’t have succeeded |
| C．mustn’t have succeeded | D．can’t have succeeded |
---You _________to our Mom like that. It was awfully impolite.
---You are right. I must have been crazy at that moment.
| A．mustn’t have talked | B．needn’t have talked |
| C．shouldn’t have talked | D．may not have talked |
Electric trains have now _______ steam trains in England.
| A．taken place | B．in place of | C．instead of | D．taken the place of |
The boy suggested that Tom ______ the problem another way, and Tom’s expression suggested that he_________.
| A．should solve; agreed | B．solve; agree | C．solved; should agree | D．solved; agreed |
Everyone has periods in their lives ______ everything seems very hard.
| A．when | B．where | C．which | D．that |