6. dirty, park, shirt, thank, farmer, girl, far, garden, three, dark, corn, white, when, why
7. a). my cats are nice.
b). I am a pupil.
c). A girl can sing well.
d). My sister likes to play computer games.
e). Where do you live?
8. a). is
b). am
c). is
d). are
e). is
9. b). Yes, I do.
Yes, I do like cheese.
c). Yes, he is.
Yes, my friend is funny and brave.
d). Yes, I do.
Yes, I have got a dog.
e). Yes, they do.
Yes, My friends can play chess.
f). Yes, I would.
Yes, I would like to eat some sweets.