They are so close friends and their friendship ________ college days.
| A．dates back to | B．dates back | C．dates to | D．dates back from |
You’d bettera doctor about your illness.
A consult
B. advise
C. refer to
D. discuss
Scientists thousands of chemicals before they decided on the right one in the end .
| A．tried out |
| B．found out |
| C．worked out |
| D．turned out |
What Mr. White said sounds .
| A．friendly |
| B．wonderfully |
| C．pleasantly |
| D．nicely |
It’s obvious that the Beijing Olympic Games a great success.
| A．kept |
| B．showed |
| C．proved |
| D．remained |
To their great , Tom’s problem proved not to be as serious as they had feared.
| A．happy |
| B．worry |
| C．anxiety |
| D．relief |