30. went out - were having
31. was walking - saw
32. have worked
33. have been
34. have you lived - have lived
35. have just decided
36. Have you ever been - haven't been - have been
37. have written
38. has just gone
39. have travelled
40. studies
41. boils
42. is playing
43. has lived
44. didn't go
45. was
46. have waited - hasn't come
47. learns - got - was listening
48. bought - haven't moved
49. is doing
50. rises - sets
51. Have you seen
1. opened - was standing
2. arrived
did you do - reported
3. haven't seen
4. has been
5. was going
6. moved
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