1-

a)sit

b)come

c)eat

d)study

2-

a) don't close the door.

b) don't eat my ice-cream

c) don't sit on this chair

d) go to your bedroom

3-

a) don't walk with your dog today.

b) talk more with your parents.

c) turn left in the next street.

d) don't laugh at your cousin.

4-

todas estao no modo negativo imperativo