At the beginning of class, the noise of desks _____ could be heard outside the classroom.
| A．opened and closed | B．to be opened and closed |
| C．being opened and closed | D．to open and close |
You dare not go alone, you?
| A．don’t | B．do | C．dare | D．daren’t |
You need to come earlier, you?
| A．don’t you | B．needn’t | C．don’t | D．won’t |
You’d better call in a doctor for your mother, you?
| A．had | B．would | C．hadn’t | D．wouldn’t |
You don’t think I’m going out in such wet weather, ?
| A．am I | B．do you | C．don’t you | D．do I |
He must have left home yesterday, he?
| A．hasn’t | B．didn’t | C．mustn’t | D．needn’t |