I want to make friends ( ) China.

I want to make friends ( ) China.
A.on
B.at
C.in
D.with
there are nineteen students in ( ) class.
A.his
B.your
C.my
D.her
( ) are many Chinese people in Toronto and I want to talk with them.
A.here
B.there
C.they
D.these
can you be my pen pal and ( ) me?
A.visit
B.help
C.meet
D.show