40.I am very interested in Mark Twain’s novels, ____________? 　　　　　　　

39.You’d better go at once, _____________? 　　　　　　　　　　　　　　

38. Mother used to live in a poor village, ____________?　　　　　 　

37. What beautiful flowers, ______________? 　　　　　　　　　　　　　　

36. She’s been a worker here for many years, ______________?　　　　　　　 　

35. I wish to visit America, _____________? 　　　　　　　　　　　　　　　

34. She is unfit for the position, _____________? 　　　　　　　　　　　　　

33. They need our help badly at the moment, ______________? 　　　　　　　

32. There’s not much news in today’s newspaper, _____________? 　　　　　　

31. They must have stayed at home last night,____________?