The light is still on. They ___ to turn it off when they left the room.
| A．must forget | B．could have forgotten |
| C．may forget | D．must have forgotten |
I didn’t mean to hurt you．What I meant was that you ______ have spoken to him like that.
| A．shouldn’t | B．mustn’t | C．wouldn’t | D．couldn’t |
You ______ worry about their safety．They are old enough to take care of themselves.
| A．mustn’t | B．needn’t | C．can’t | D．wouldn’t |
We should make full use of whatever happens to us．There is always____ to learn from every experience.
| A．nothing | B．anything | C．something | D．everything |
------ Could you please tell me ______?
------ It’s next to the post office.
| A．where is the supermarket | B．where the supermarket is |
| C．where was the supermarket | D．where the supermarket was |
March is _____ month of the year.
| A．three | B．third | C．the three | D．the third |