All of the guests by 9 o’clock , but the host until 15 minutes later .
| A．arrived ; didn’t turn up | B．had arrived ; didn’t turn up |
| C．arrived ; hadn’t turned up | D．had arrived; hadn’t turned up |
_____ in writing a lecture speech on Chinese History, he didn’t hear anybody knocking at the door.
| A．Having absorbed | B．To be absorbed |
| C．Absorbed | D．Absorbing |
There is no light on – they ______ be at home.
| A．mustn’t | B．needn’t |
| C．can’t | D．shouldn’t |
______to the sun for too long can hurt your skin.
| A．Being exposed | B．To expose |
| C．Exposing | D．Exposed |
— How often do you eat out? — ________ ，but usually once a week.
| A．Have no idea | B．It depends |
| C．As usual | D．Generally speaking |
If you grow up in ______large family, you are more likely to develop _____ability to get on
well with others.
| A．/, an | B．a, the |
| C．the, an | D．a, an |