肯定+否定？ 否定+肯定？如：

①You can't do it, can you? ②They are very late for the meeting, aren't they?

40. Jim　 has never seen it ,_____________?

39. Tom　 came here yesterday ,____________?

38.The part begins at 6 ,_____________?

37. He has to　 come here early,___________?

36. We don't think she can do it,__________?

35. She thinks she can do it herself,_________?

34. I think he can do it by himself,__________?

33. He'd like an apple,_____________?

32. You'd better put on your coat,___________?