-Are you guys ready for the Campus Singers Competition?
-Sure! Since we are young, try it，__________ we will regret！
| A．and |
| B．but |
| C．or |
| D．then |
The manager decided to give the job to ____he believed had a strong sense of duty .
| A．who | B．whom | C．whomever | D．whoever |
Some friends tried to settle the quarrel between Mr. and Mrs. Brown without hurting the feeling of____, but failed .
| A．none | B．either | C．both | D．neither |
Professor Smith has written some short stories , but he is____known for his plays .
| A．better | B．more | C．best | D．most |
There is a new problem ___in the popularity of private cars ____road conditions need to be improved .
| A．involving ; that | B．involved ; that |
| C．involved; where | D．involving ; which |
—Really ? Who will give ____lecture ? What is it about ?
—Professor Chen , _____ president of Beijing University . About pollution .
| A．the ;a | B．the;/ | C．a ; the | D．a ;/ |