Use the past indefinite or the present prfet instead of the infinitives in brackets How...

Question

Use the past indefinite or the present prfet instead of the infinitives in brackets
How long you(to know ) him? HE (to livr) in LENIGRAD for 2 years and then (to go) to Sibiria
When he (to arrive ) ?
I (to read )this book when i was at school
i cant go with you as i (not to finish)my work

Answer 1

How long have you known him?
He had lived in LENIGRAD for 2 years and then went to Siberia.
When did he arrive?
I read this book when I was at school.
I can't go with you as I have not finished my work.