36. B. Having/ to take ( Ving / to V)
37. C. Making / writting ( avoid Ving)
38. B. Repainted/ do ( have something V3)
39. C. Making ( Ving)
40. A. Working / go ( busy Ving)
41. A. To walk ( used to V)
42. B. Falling ( Ving)
43. D. Helping / working
44. D. Being photographed/ to have ( Bị động)
45. C. To see/ crossing ( happen to V)
46. B. To open
47. C. Taking
48. C. Walking / taking (Ving)
49. B. Not to walk
50. B. To fly/ seeing ( first to V)