A
I met a woman. She can speak six languages.
I met a woman who can speak six languages.
Jack was wearing a hat. It was too big for him.
Jack was wearing a hat that was too big for him. or Jack was wearing a hat which was too big for him.
B
A thief is a person who is steal things.
Do you know anybody who can play the piano.
The man who phoned didn’t give his name.
The people who work in the office are very friendly.
C
An airplane is a machine that flies.
Emma lives in a house that is 400 years old.
The people that work in the office are very friendly.
D
An airplane is a mechine which flies.
Emma lives in a house which is 400 years old.
Do you remember the woman who was playing the piano at the party.
