82. I have been learning English for 5 years.
-> How long .....................................................?
83. He has been staying here for 8 years.
-> How long .......................................................?
84. It takes him 45 minutes to go to the office.
-> How long .......................................................?
85. They have been teaching this high school for 5 years.
-> How long ...........................................................?
86. It takes her 20 years to change all of her life.
-> How long ............................................................?
82. have you been learning English?
83. has he been staying there?
84. does it take him to go to the office?
85. have they been teaching [in] this high school?
86. does it take her to change all of her life?
82. How long have you been learning English?
83. How long has he been staying here?
84. How long does it take him to go to the office?
85. How long have they been teaching at this high school?
86. How long does it take her to change her entire life?
82. How long have you been learned English?
83. How long has he been stayed here?
84. How long does it take him to go to the office?
85. How long have they been teaching this high school?
86. How long does it take her to change all of her life?