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课时提升作业 Ⅰ. 单项填空 1. (2017·合肥模拟)John was dismissed last week because of his attitude towards his job. A. informalB. casualC. toughD. violent 2. (2017·嘉兴模拟)The police would offer a(n) to anyone who could give some information about the robbery. A. reward B. award C. prize D. bonus 3. (2017·武汉模拟)We could hardly believe what he says because he is changing his mind. A. constantly B. steadily C. suddenly D. regularly 4. I often keep some money at hand when making a journey, just . A. in time B. in case C. in need D. in store 5. (2017·泉州模拟)—Why do you look so worried? —My computer broke down and my essay unfinished since. A. had left B. has left C. was left D. has been left 6. We are at your service. Don’t to turn to us if you have any further problems. A. beg B. hesitate C. desire D. seek 7. (原创)Americans now carry around 270 million guns, them the most heavily armed people in the world, CNN reported. A. to make B. making | 
