giúp mk với ạ
18. Mary is Peter's sister.
19 đúng rồi
20. John is Mr. and Mrs. Black's son.
21. Mr Ba gets to work by motorbike everyday.
22. There are six hundred students in my school.
23. Jack is Julia's brother.
18. Mary is Peter's sister
20. John is Mr and Mrs. Brown's son
21. Mr Ba gets to work by motorbike everyday
23. Jack is Julia's brother
18. Mary is Peter's sister.
19 đúng rồi
20. John is Mr. and Mrs. Black's son.
21. Mr Ba gets to work by motorbike everyday.
22. There are six hundred students in my school.
23. Jack is Julia's brother.
Mn giúp mk với mấy câu này với ạ . mk cảm mơn ạ
giúp mk với ạ 
