Tìm lỗi sai trong mỗi câu sau và sửa lỗi sai:
1) Lan are not in the classroom. She is outside
2) Ngoc have a pet. It is a bird
3) My friends doesn't play sports
4) We likes cartoons but we don't like flims
5) He loves reading fairy tails
6) Does you do your homework after school?
7) Is Ba and Nam from Viet Nam?
8) How often does Nga goes to the park?
9) Do Mai ang Ha play badminton? ----- No,they do
10) His family often have a picnic when he has free time
11) He never is late for school
12) Does your mother work near your house? ----- Yes,she do
Anh,chị giúp em zới ạ! Em cảm ơn! 
1) Lan are not in the classroom. She is outside.
are ---> is
2) Ngoc have a pet. It is a bird.
have ---> has
3) My friends doesn't play sports.
doesn't ---> don't
4) We likes cartoons but we don't like flims.
likes ---> like
5) He loves reading fairy tails.
tails ---> tail
6) Does you do your homework after school?
Does ---> Do
7) Is Ba and Nam from Viet Nam?
Is ---> Are
8) How often does Nga goes to the park?
goes ---> go
9) Do Mai and Ha play badminton? ----- No, they do.
do ---> don't
10) His family often have a picnic when he has free time
have ---> has
11) He never is late for school.
never is ---> is never
12) Does your mother work near your house? ----- Yes, she do.
do ---> does