9. B ( should: nên)
10. C (buổi sáng chủ nhật nên dùng IN)
11. C
12. A ( Chúc ngủ ngon)
IV.
1. A was ( yesterday->QKĐ)
2. C better
3.C lessons ( Sau HOW MANY là danh từ số nhiều)
4. B to go
V.
1. Three children
2. At a quarter of eight
3. At school canteen
4. He helps his Mum laying the table
5. Yes, he does