39. He usually ( water ) ................................. the trees in the morning.
40. She ( not listen ) ................................ to the radio now. 
41. The sun ( rise ) ............................ in the East and ( set ) ............................. in the West.
42. He ( play ) ........................... table tennis at the moment.
43. Mo and Nguyen ( sing ) .......................... the same song now. 
44. They always ( make ) ............................. noise in the class. 
45. Hung often ( not go ) .............................. camping in the summer.
46. Hanh ( not read ) ........................... with the friends at the moment. 
47. ...................... Son ( write ) ...................... to their friends every summer holiday ? 
48. What ................... You ( listen ) ..................... on the radio ? 
49. .......................... You often ( do ) .................... your homework in the evening ? 
50. You usually ( watch ) ......................... TV in the evening ?
51. They always ( talk ) .......................... to each other in the weekend. 
52. They ( not be ) .......................... classmates. 
53. I often ( wash ) ............................... my clothes. 
54. ........................ You often ( write ) ............................ to your friend ? 
55. They usually ( sing ) ........................... in the early morning.
56. We ( meet ) ....................................... each other twice a month.
57. They always ( not go ) .......................... to the school by train.