It is uncertain ________ side effect the medicine will bring about, although about two thousand patients have taken it.
| A．that | B．what | C．now | D．whether |
It is surprising that that mean man ________ give away his money to the poor.
| A．should |
| B．would |
| C．can |
| D．must |
You ________ pay more attention to your behaviour next time.
| A．would |
| B．can |
| C．will |
| D．shall |
—_________ I turn up the TV a little?
—Sorry, you _________. You will wake the baby up.
| A．May; might |
| B．Could; could |
| C．Might; mustn’t |
| D．Can; shouldn’t |
You ________ do the exercise if you don’t want to.
| A．may not |
| B．can’t |
| C．mustn’t |
| D．needn’t |
You _________leave the window open. It’s so cold.
| A．mustn’t |
| B．needn’t |
| C．mightn’t |
| D．won’t |