21. Where would you go if you a car? A. have B. has C. had D. having 22. The children laughed when they were watching a comic. A. happiness B. happy C. happily D. unhappy. 23. There is too much traffic , the air is polluted. A. However B. Since C. Therefore D. But 24. She goes to the library three times a week. She reads books there. A. never B. often C. rarely D. once 25. UFOs mean flying objects. A. unknown B. unidentified C. unable D. unimaginary 26. If I a bird, I would be a dove. A. am B. is C. are D. were 27. The telephone was by Alexander Bell. A. invent B. invented C. to invent D. inventing 28. I want my English. A. to improve B. improving C. improved D. improve 29. My grandparents have lived there 1975. A. in B. on C. since D. for 30. Mai speaks English than you. A. more fluent B. more fluently C. more fast D. more faster

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