In summer, food will go bad if________in room temperature.
| A．leaving | B．left | C．being left | D．having left |
I will be surprised if you can get Calvin, who is very busy, ______these tickets for you.
| A．buy | B．buying | C．buys | D．to buy |
一Is Tony a man with good manners?
一I don’t think so. As a matter of fact, he is ______but polite.
| A．something | B．anything | C．everything | D．nothing |
Wolves are very ______: they can live in forests, on open plains, or in the snows of the Arctic.
| A．adaptable | B．adoptable | C．available | D．accessible |
you may have , you should gather your courage to face the challenge .
| A．However serious a problem |
| B．Whatever serious a problem |
| C．However a serious problem |
| D．No matter how a serious problem |
With the development of modern society, E-mail as well as telephonesan important part in daily communication.
| A．have played | B．is playing | C．are playing | D．had played |