Look! There’s no light on—Sara _____be at home.
| A．can’t | B．mustn’t | C．needn’t | D．shouldn’t |
As everybody knows, Hong Kong used to be _____ part of _____ British Empire．
| A．不填; a | B．a; the | C．不填; the | D．the; 不填 |
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 |