21. A. before B. ago C. already D. still

　　22. A. town B. country C. friends D. way

　　23. A. train B. car C. highway D .phone

　　24. A. have B. go C. ride D. cross

　　25. A. safe B. dangerous C. fast D. slow

　　26. A. moment B. way C. road D. day

　　27. A. come B. leave C. take D. drive

　　28. A. crossroad B. corner C. station D. beginning

　　29. A. direction B. road C. disappointed D. interesting

　　30. A. about B. over C. of D. up

　　31. A. another B. the other C. other D. others

　　32. A. asked B. forced C. encouraged D. told

　　33. A. far B. safe C. dangerous D. dirty

　　34. A. going B. coming C. driving D. walking

　　35. A. lands B. cars C. farms D. hills

　　36. A. heavy B. little C. few D. light

　　37. A. farms B. trucks C. houses D. villages

　　38. A. together B. gone C. covered D. coming

　　39. A. looked B. liked C. enjoyed D. found

　　40. A. happiness B. scenery C. joys D. problems