31.They did it ,__________?

30.Let us decide it alone, __________?

29. Let’s catch the thief, __________?

28. Patsy can hardly see, ________?

27. You have no classes, __________?

26.We must try our best, ____________?

25. The Great Wall is beautiful, ________?

24. Let us do it by ourselves, _______?

23. Let’s have a talk now, __________?

22. Don’t make so many noises, ________?