---- Where did you watch the national flag being raised last Monday morning?
---- It was on the square _____ we flew kites sometimes.
| A．which | B．that |
| C．to which | D．where |
The boss _____ the workers 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 |
The reason _____ their failure you know is ______ they didn’t get fully prepared for the experiment.
| A．why…that | B．that…why |
| C．why…because | D．for…that |
Susan could be a very attractive girl but she ____ no attention to her clothes.
| A．had paid | B．paid | C．pays | D．would pay |
During the meeting a young man cried out suddenly and threw his notebook at the chairman, _____brought the room to disorder.
| A．it | B．and which | C．and that | D．this |
I ______ her not to walk on the thin ice but she wouldn’t listen to me.
| A．suggested | B．warned | C．persuaded | D．admitted |