12. Your friend acts ______ he were a trustworthy person but as a matter of fact he seldom keeps_____. So remember not to trust him with anything important.
A. as if; his words B. as though; his word
B. even if; his promise D. even though; his promises
— May I stop here? — No, you _____.
| A．mustn’t | B．might not | C．needn’t | D．won’t |
We _____ for her because she never came.
| A．mustn’t have waited | B．shouldn’t have waited | C．mustn’t wait | D．needn’t wait |
Please open the window, _____?
| A．can’t you | B．aren’t you | C．do you | D．will you |
It’s still early, you _____.
| A．mustn’t hurry | B．wouldn’t hurry | C．may not hurry | D．don’t have to hurry |
The plant is dead. I _____ it more water.
| A．will give | B．would have given | C．must give | D．should have giv |