He has been for five years.A. in prisonB.in the prisonC.on prisonD.at the prison

He has been here in London for many years.（英译中)

My father has been on the salary schedule in this factory for nearly 20 years.A.pay packe

The excitement of hunting big game in Africa has been a lure to Europeans for 200 years.A.

The machine needs a complete ______ since it has been in use for over ten years.A．maintain

Lindsey and I have been writing regularly to ______ for several years.A.ourselvesB.each ot

----Does Liu Hua serve in the army?----No but he ___in the army for three years.A.servedB.has served