38. are sitting
39. don't understand
40. does she finish
41. doesn't usually drive - walks
42. watch - are listening
43. is making
44. are going
45. needs
46. phones
47. paint
48. watches
49. makes - is making
50. is waiting (chủ ngữ trong câu này được coi là số ít)
51. takes
52. is crossing
53. has