( ) （10） The children are showing their things each other.
A. to B. for C. at
( ) （9） Mike and Ben are the music room.
A. in B. on C. at
( )（8） There is a map of world the wall.
A. /, on B. the, at C. the, on
( )（7）I’ll go and join .
A. them B. they C. me
( ) （6） Can you come and help with Maths?
A. I; my B. me; my C. us; my