81. Do you often (write) ……write…………….to your friend?
82. Mr.Mai (water) ……waters………………. the plant evey morning.
83. Will he (come) ……come…………home soon ?
84. We (meet) ………meet……………. each other twice a month.
85. He (listen) …………is listening…………. to the telephone at the moment.
86. They always (not go) ……don't go……………….to the school by train.
87. He (drink) ……is drinking………………. beer at the bar at the moment.
88. Nga (not / go) …isn't going………….to work tomorrow.
89. They usually (sing) …………sing…………. in the early morning.
90. Are Mi and Thanh (talk) ………talking……………. on the telephone now?
Good luck