21. Prior to sth.

　　22. Range from… to…

　　23. Be busy in

　　24. Be busy doing sth

　　25. Can’t help doing

　　26. Feel like doing

　　27. Have a good time (in )

　　28. Have difficulty( trouble) (in)

　　29. Spend /waste time(in)

　　30. It’s no use doing sth

　　31. There’s no point in

　　32. In the way/by the way/ in no way

　　33. It’s the first/second time that

　　34. Catch sb doing sth

　　35. Call off=cancel

　　36. Have an influence on sth/sb

　　37. Impose sth on sb.

　　38. But for sth.

　　39. Risk doing sth.

　　40. Escape doing sth.