23. I don't really care           (我的朋友和我相同還是不同) .(if)

22. —Would you mind helping me           (把餐桌上的牛奶擦掉) ？

—Of course not. (clean)

21. I'm shy                (所以對我來說交朋友不容易) .(easy)

20. —Which one is your sister?

—            (穿紅衣服的那個(gè)) .(one)

19. Tom             (從不去看牙醫(yī)清潔牙齒) .(for)

18.                (關(guān)于看電視的問題的答案) were also interesting.（about)

17. Last month we               (問了我們的學(xué)生關(guān)于他們空閑時(shí)間的活動(dòng)) .(ask)

16. We          (等了一個(gè)多小時(shí)) because there were too many people. (wait)

15. We                 (又走了兩個(gè)小時(shí)) before we got to the top. (another)

14. The only problem was                 (在晚上除了閱讀沒有很多可做的事) .(but)