Điền a hay an nếu cần

Ex 1: Điền a hay an nếu cần
1. There is …………………armchair, ………………… stool and ………………… table in his room.
2. What is this? It’s ………………… eraser.
3. Mr Hoang is ………………… doctor.
4. There is ………………… lamp on the table.
5. Is your father ………………… engineer? No, he isn’t. He’s ………………… teacher.
6. We live in ………………… house on Ngo Quyen street.
7. Is there ………………… clock in your classroom?
8. I have ………………… umbrella and ………………… raincoat.
9. That is ………………… Susan. She is ………………… student.
10. I live in ………………… house, but this isn’t my ………………… house.
11. This is ………………… eraser and that is ………………… ruler.
12. –These are ………………… couches. –Are they your ………………… couches?
13. –Is this ………………… book? –No, it’s ………………… notebook.
14. Hello, I’m ………………… David Clark. I’m ………………… doctor.
15. There is ………………… armchair in ………………… my living room.
16. There are ………………… three books on ………………… the desk.
17. –Is that ………………… your waste basket? –No, it’s ………………… her waste basket.
18. How many ………………… chairs are there in ………………… the house?
19. This is ………………… boy
20. It’s ………………… egg.