52. ______ killing of so many protected animals made _______ stir in the local people.
| A．/; / | B．The; / | C．/; a | D．The; a |
.He went there on foot and got very tired, but he _____ by bus. The fare was rather cheap.
| A．could have gone | B．must have gone |
| C．ought have gone | D．will have gone |
Jape is two hours late. What _____?
| A．can have happened | B．can happen |
| C．should have happened | D．should happen |
–We didn’t see Tom at the lecture yesterday.
–He _____ it. He had attended the same lecture before.
| A．mustn’t attend | B．can’t have attended |
| C．would have not attended | D．needn’t have attended |
You _____ the flowers more water so that they can grow well now.
| A．would have given | B．might have given |
| C．must have given | D．should have given |
You _____ across the road without looking round; you _____ down by a car.
| A．shouldn’t run, might have been knocked |
| B．shouldn’t have run, might have been knocked |
| C．mustn’t run, could have been knocked |
| D．mustn’t have run, could be knocked |