The professor managed to find some grounds (facts)_________his arguments．
| A．to be based on | B．to base on |
| C．which to base on | D．on which are based |
People try to avoid public transportation delays by using their own cars，and this________creates further problems.
| A．in short | B．in case |
| C．in doubt | D．in turn |
Doctors always tell us that drinking too much________our health，but some people don’t care.
| A．is harm to | B．does harmful to |
| C．is harmful to | D．do harm to |
The top leaders of the two countries are holding talks in a friendly________.
| A．atmosphere | B．state |
| C．situation | D．phenomenon |
I’m sorry，I can’t give you the telephone number without
Mr.Smith’s________.
| A．permission | B．allowing |
| C．agreement | D．performance |
On the top of Mount Tai，you can get a wonderful________of the sunrise.
| A．view | B．scene |
| C．sign | D．sight |