(一)改写句子 1. We plant trees in spring every year. _________________ by us in spring every year. 2. She posted the letter yesterday. ____________________ by her yesterday. 3. Mr Turner gave me a birthday present. _______________a birthday present by Mr Turner. 4. He is drawing a picture. _______________________ by him. 5. You may hand in your homework tomorrow. ______________________________ by you tomorrow. 6. She is going to write a letter. __________________________ by her. 7. I have given you the new book. __________________________ to you. 8. Her bag cannot be found by her. _________________ her bag. 9. Do you often hear her sing Russian songs? _________________________Russian songs by you? 10. She doesn’t let her son swim in the river. _______________________ in the river by her. 11. The bridge was being built by them at this time last year. __________________ the bridge at this time last year. 12. Does she often sing the song? _____________________ by her? 二 选择题 1. If city noises ____ from increasing , people ____ shout to be heard even at dinner . A . are not kept ; will have to B . are not kept ; have C . do not keep ; will have to D . do not keep ; have to 2. The fifth generation computers, ____and perfected now. A. developed B. have developed C. are being developed D. will have been developed 3. --- ____ the sports meet might be put off . --- Yes , it all depends on the weather . A . I've been told B . I've told C . I'm told D . I told 4. I need one more stamp before my collection ___. A. has completed B. completes C. has been completed D. is completed 5. Rainforests ___ and burned at such a speed that they will disappear from the earth in the near future. A. cut B. are cut C. are being cut D. had been cut 6. The new bridge ___ by the end of last month. A. has been designed B. had been designed C. was designed D. would be designed 7. When part of a pencil is in a glass of water, it looks as if it ____. A. breaks B. has broken C. was broken D. had been broken 8. Great changes ___ in the city, and a lot of factories ___. A. have been taken place; have been set up B. have taken place; have been set up C. have taken place; have set up D. were taken place; were set up 9. That suit __ over 60 dollars. A. had costed B. costed C. is costed D. cost