___ is a good idea to keep quiet about the problem.
| A．That | B．It | C．There | D．What |
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 |
She could hardly believe it,?
| A．couldn’t she | B．could she | C．didn’t she | D．did she |
——You are not a new comer, are you?
——. I came here only yesterday.
| A．No, I am | B．Yes, I am | C．No, I’m not | D．Yes, I’m not. |
He comes late sometimes,?
| A．isn’t he | B．comes he | C．doesn’t he | D．is he |