| He began to take political science _____ only when he left school . |
A. strictly B. truly C. carefully D. seriously |
| In my opinion, life in the twenty-first century is much easier than _____. |
A. that used to be B. it is used to C. it was used to D. it used to be |
| — Do you enjoy your present job? — ______. I just do it for a living. |
A. Of course B. Not really C. Not likely D. Not a little |
| 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 |
| Emergency line operators must always _____ calm and make sure that they get all the information they need to send help. |
A. grow B. appear C. become D. stay |
| The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again. |
A. after B. before C. since D. when |
| I saw a woman running toward me in the dark. Before I could recognize who she was, she had run back in the direction _____ she had come. |
A. of which B. by which C. in which D. from which |
| Customers are asked to make sure that they ____ the right change before leaving the shop. |
A. will give B. have been given C. have given D. will be given |
| According to _____ World Health Organization, health care plans are needed in all big cities to prevent _____ spread of AIDS. |
A. the; 不填 B. the; the C. a; a D. 不填; the |