41 B => play
42 B => do
43 He is not old enough to play this game
44 I used to come to the cinema with her
45 They are going to invite her to come over for dinner tonight
46 Who helped you tidy the house yesterday
47 Where did he use to live
48 What should student do everyday
49 There is a lighting fixture above of the dining table
50 my Son is old enough to take care of himself
41. to play -> play
42. B. doing -> do
43. He is not old enough to play this game
44. I used to come to the cinema with her
45. They are going to invite her to come over rfor dinner tonight
46.Who helped you tidy the house yesterday?
47. Where did she use to live?
48. What should students do every day?
49. There is a lighting fixture above the dining table.
50. My son is old enough to take care of himself