III
1. Art and Music are her favourite subjects.
IV. 
1 . Her name is Quynh
2. Yes, she is
3. She have four lesson
 

III.
1,Art and Music are her favorite subjects.
3.Nam has Maths·every schoolday.
4.Students don't have English lessons on Saturdays.
5.My class have a Math lessons six times a week.
IV.
1.Her name is Quynh.
2.No,she isn't.
3.She has four lessons (Maths,Vietnamese,English and Music)
4.She has English three times a week.
5.Her favorite subject is English.
6.Because it is very difficult.