Открыть скобки в Present Perfect или Past Simple.
35. I don't keep pets now but I (use) to keep a dog when I (be) a boy.
36. I (iron) Jim's shirts this morning and in the afternoon I (do) the shopping.
37. Why are you limping? -1 (twist) my ankle.
38. The plane (take) off from London at 9.00 and (land) in Geneva at 10.30.
39. Joanna (not change); she is the same as ever.
40. When I (.switch) on the dishwasher, the machine (make) a loud noise.
41. People always (want) to be able to fly like birds in the sky.
42. I once (play) a guitar which (have) only five strings.
43. I never (teach) a class where the students are so lazy.
44. I (lose) a button. I don't suppose I'll ever find it.
45. The slower you eat the more you will think you (eat).