Put the verb in the brackets in the correct form

Put the verb in the brackets in the correct form:
1.My father used to (smoke)___30 cigarettes a day
2.He is used to (write)___with his right hand
3.When I was young, I(not see)___to go out for a walk
4.___you (use to) live here?
5.There uses to (be)___trees in this area