科目： 来源：gzyy 题型：
| Fred entered without knocking and, very out of breath, sank _____ a chair. |
A. on B. off C. into D. to |
科目： 来源：gzyy 题型：
| — Did you watch the basketball match yesterday? — Yes, I did. You know, my brother _____ in the match. |
A. is playing B. was playing C. has played D. had played |
科目： 来源：gzyy 题型：
| The two girls are getting on very well and share _____ with each other. |
A. little B. much C. some D. none |
科目： 来源：gzyy 题型：
| The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase _____. |
A. them B. those C. it D. that |
科目： 来源：gzyy 题型：
| Sit down, Emma. You will only make yourself more tired, _____ on your feet. |
A. to keep B. keeping C. having kept D. to have kept |
科目： 来源：gzyy 题型：
| — Bob has gone to California. — Oh, can you tell me when he _____? |
A. has left B. left C. is leaving D. would leave |
科目： 来源：gzyy 题型：
| — That must have been a long trip. — Yeah. It _____ us a whole week to get there. |
A. takes B. has taken C. took D. was taking |
科目： 来源：gzyy 题型：
| Tom _____ in the library every night over the last three months. |
A. works B. worked C. has been working D. had been working |
科目： 来源：gzyy 题型：
| The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat. |
A. being weighed |
科目： 来源：gzyy 题型：
| Experiment of this kind _____ in both the U.S. and Europe well before the Second World War. |
A. have conducted B. have been conducted C. had conducted D. had been conducted |
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