64,Will you see

65,will go 

66,will plant

67,will write

68,aren't 

69,picks

70,is going to watch

71,Do... do

72,am reading

73,Do... watch 

74,talk

75,are playing

76,doesn't go 

77,aren't 

78,is listening 

79,are reading 

80,aren't playing 

Answers:

   64. Will you see the doctor next week?

   65. Mai and Nam will go to the movie theater tomorrow evening.

   66. They will plant trees a long this street next month.

   67. He will write to his friend next week.

   68. They aren't doctor.

   69. He often picks his friend up at the rain way station morning.

   70. She will watch a romantic film on TV this evening.

   71. Do you often do your homework in the evening?

   72. I am reading an interesting novel at the moment.

   73. Do you usually watch TV in the evening?

   74. They always talk to each other in the weekend.

   75. They are playing soccer at the moment.

   76. She doesn't often go shopping on weekend.

   77. They aren't classmates.

   78. Is he your father?

   79. Is she listening to music now?

   80. Mai and Hang aren't playing the game at the moment.