Jack is __ front __of john My pen pal is arriving

Jack is __ front __of john My pen pal is arriving
Jack is __ front __of john
My pen pal is arriving __ Shanghai this Sunday.
He always walks__ the park to go to school
The man__the right is my father.

Jack is _in_ front _不填_of john
My pen pal is arriving _in_ Shanghai this Sunday.
He always walks_to_ the park to go to school
The man_on_the right is my father.