a)
1.They're people who make you laugh.
2. It's a machine which cuts the grass.
3. It's an animal which lives in the sea and has eight legs.
4. It's a room where people try on clothes.
5. He's the person who helps you with your luggage.
6. It's a kind of food which keeps vampires away.
b)
1. She is the woman who lives next door to me.
2.That is the shop where I bought my dress.
3.He is the actor who was in "Friends".
4.They are the children who broke my window.
5.This is the restaurant where they do great pasta.
6.That is the switch which controls the central heating.
7.He is the teacher who teaches my sister.
8.That is the room where we have our meetings.
А где sentence (предложения)?