The car the truck so closely, otherwise the traffic accident could have been avoided.
| A．shouldn’t follow | B．was following | C．has been following | D．mustn’t follow |
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 |
You must work hard from now on, ?
| A．can you | B．won’t you | C．mustn’t you | D．needn’t you |
You needn’t go, ?
| A．can you | B．must you | C．need you | D．may you |