He's lived here for 3 months,?

He's lived here for 3 months, hasn't he?

Объяснение:

He's lived - это краткая форма, в полном виде - He has lived (Present Perfect)
"Хвостик" разделительного вопроса образуется при вспом. глагола (в данном случае это has) + частица not и местоимение.

to agree,to belive,to recognize,to know,to desire,to need,to wish,to want,to seen,to belong,to forget,to prefer,to envy,to deny,to remember.

1) i have put the dot in the corner of sheet of paper.

2)i had put the dot in solution of this question.

1)i have dotted a lection.

2)i has dotted a word in the sentence.