.He might have_____ his idea about the art at the exhibition much better if he had planned what he wanted to say.
| A．carried out | B．worked out | C．thought out | D．made out |
The professor walked onto the platform and seated himself in a chair,________ for answering questions.
| A．had prepared | B．being prepared |
| C．preparing | D．prepared |
________ around our new dormitory,the foreigners were taken to visit our canteen,which lies behind.
| A．Showing | B．Having shown |
| C．Being shown | D．Having been shown |
If we throw away too much waste and can’t keep good ecosystem,we _________ our future.
| A．must have destroyed | B．could be destroying |
| C．may be destroying | D．must destroy |
—_________ he come to see you as he promised?
—Of course,please and I’d rather he _________ me the truth.
| A．Shall;told | B．Should;will tell |
| C．Can;covers | D．Will;informed |
You _________ be hungry yet;you had a big cake only an hour ago.
| A．may not | B．mustn’t | C．can’t | D．needn’t |