29.You must have been to the Great Wall,__haven't you__________?
30.Learning how to repair motors takes a long time,____doesn't it_________?
31.They must have stayed at home last night,___didn't they_________?
32.There’s not much news in today’s newspaper,_is there____________?
33.They need our help badly at the moment,_don't they_____________?
34.She is unfit for the position,_is she____________?
35.I wish to visit America,__do I___________?
36.She’s been a worker here for many years,__hasn't she____________?
37.What beautiful flowers,____aren't they__________?
38.Mother used to live in a poor village,___didn't she_________?
39.You’d better go at once,__must you ___________?
40.I am very interested in Mark Twain’s novels,aren't you____________?
41.He never gets up late ,doesn't he
42.Don’t go out ,will you
43.Everything begins to grow in spring,doesn't it
48.Few students can answer the question,can they
21、----_When________will the foreign students be back from NanJing?我来帮他解答
