помогите пожалуйста

1) a dog drinks  2) a cat plays  3) a boy sees   4) a girl takes  5) two girls take  6) these birds eat  7)this bird eats  8) this girl cooks  9)these girls cook  10) those doctors work  11) that clown works  12) that student runs  13) this clown runs  14) these clowns run  15) those ducks swim  16) that duck swims