father-in-law (husband's father)

My father-in-law polishes them.

夫の父が磨きます

My father-in-law polishes his shoes.

夫の父が靴を磨きます

My father-in-law polishes his shoes in the entrance hall.

夫の父が玄関で靴を磨きます

My father-in-law polishes his shoes in the entrance hall in the morning.

夫の父が朝、玄関で靴を磨きます

My father-in-law polishes his shoes in the entrance hall with his son in the morning.

夫の父が息子と朝、玄関で靴を磨きます