9. I walked slowly through the market, where people ______ all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.
A. sell            B. were selling
C. had sold        D. have sold  
答案：B
考点：考查动词时态。
解析：根据“I studied the prices carefully and bought what I needed”的提示可判断此处表示“人们当时正在出售各种水果和蔬菜”，即表示过去某时正在发生的动作，故选B项。
10. I'm tired out.. I ______ all afternoon and I don't seem to have finished anything.
A. shopped        B. have shopped   C. had shopped      D. have been shopping   
答案：D
考点：考查动词时态。
解析：句意为：“我现在很累。我整个下午一直在购物，我好像什么事都没做成似的。”由语境可判断选D项。
11. Mother wanted to be a good provider, a role she ______ since her marriage to Father.
A shoulders        B shouldered     C is shouldering     D has been shouldering
答案：D
考点：考察时态。
解析：在本句since 表示自从过去到现在, 所以用现在完成时, 现在完成进行时为现在完成时的一种。
12. The living room is clean and tidy, with a dining table already ______ for a meal to be cooked.
A. laid        B. laying      C. to lay      D. being laid
答案: A
考点：本题考查with复合结构的用法/被动语态。
解析：with复合结构的构成是“with+宾语+宾语补足语”，由于table与lay(搁放)之间是逻辑上的动宾关系，所以空格处用过去分词表示被动。
13. Up to now, the program ________ thousands of children who would otherwise have died.
A. would save        B. saves     C. had saved       D. has saved
答案: D
考点：本题考查动词时态的用法。
解析：句意应为“截止到现在，这个项目已经挽救了成千上万的本来会死去的孩子的生命。”up to now是现在完成时态的标志，所以空格处使用现在完成时态。
14. We ______ on this project for four hours. Let’s have a rest.
A. are working     B. have been working    C. worked      D. had worked
答案：B.
考点：考查动词时态。
句意：我们在这项工程上一直工作了四个小时了。咱们休息一会。
解析：从句子的时间状语for four hours和后面的句子Let’s have a rest可知，动作从过去发生，到说话的时候一直在进行着，所以此处要用现在完成进行时态。   
15. Traditional folk arts of Tianjin like paper cutting ______ at the culture show of the 2010 Shanghai World Expo.
A. are exhibiting        B. is exhibiting    
C. are being exhibited    D. is being exhibited
答案：C.
考点：考查被动语态。
句意：想剪纸一样的天津民间传统艺术品正在2010上海世博会的文化展览中展出。
解析：因为2010年上海世博会现在还在进行着，所以像剪纸一样的天津传统民间艺术品也是“正在被展览”，所以用现在进行时态的的被动语态形式。
16. In many people’s opinion，that company，though relatively small，is pleasant ______．
A．to deal with      B．dealing with    C．to be dealt with  D．dealt with
答案：A
考点：考查不定式主动表被动。
解析：在某些形容词后经常用不定式的主动形式表被动，此时，不定式动作和句子的主语存在动宾关系。又如：The apartment is comfortable to live in.