Solution
Point 3:
a) Yes, i am.
b) Not, i am not.
c)I am from Colombia.
d) Not, i am not.
e) I am twenty years old.
f) No, they aren't.
g) My friends are from Colombia.
Point 4:
a) They are a grils.
b) They are a teacher.
c) These is a deer.
d) We are a boys.
e) You are a children.
f) We are a baankers.
g) These is a boxes.
Point 5:
a) Sarah and i am are sisters.
b) Bena and Tim  is are at the school.
c) Horses and cows is are animals.
d) England are is a country.
e) Tim are is from America.

Point 6:
She is Lucy, Her last name is Pitt, she is trirteen years old, she is a child. Her Job is student, she is from France, her Nationality is french.
Point 8:
a) She isn't a young gril.
b) I am not a detective.
c) They aren't  ugly cats.
d) We aren't  strong girls.
e) Steven isn't from England.
f) you aren't a nurse.
g) He isn't a basketball player.
h) They aren't bottles.
i) That isn't a fish.
j) The black cat is small.
k) this boys isn´t lazy.
Point 9: