Teenagers ________ their health because they play computer games too much．
| A．have damaged | B．are damaging |
| C．damaged | D．will damage |
—Is there any flight to Tokyo today?— I think there _____, for the weather is too bad.
| A．mustn’t be | B．mightn’t be | C．needn’t be | D．can’t be |
—We need a person badly to think up such an idea.—_______ the new comer have a try?
| A．Shall | B．May | C．Should | D．Need |
Sorry I’m late. I ______ have turned off the alarm clock and gone back to sleep again.
| A．might | B．should | C．can | D．will |
I’ve tried several times, but the car just _______.
| A．doesn’t start | B．wouldn’t start | C．won’t start | D．didn’t start |
--What will you do during winter vacation?--I don’t know, but it’s about time ____ something.A I’m deciding B I’ll decide C I’d decided D I decided