Sử dụng "a, an, the, ko có" để hoàn thành câu:
1. It takes me half..................... hour to get to work by .....................bus.
2. What does.................. post-office sell apart from stamps.
3. I want to buy...................... envolope and........................ fifty thousand dong phone card.
4. Viet would like to send his letter to...................USA.
5. My brother needs to buy................... stamp for ...................... overseas mail.
6. Mr.Thanh has........................ appointment at 4 o'clock.................... this afternoon.
7. Yesterday....................dentist fill..................... cavity in my tooth.
8. What's..................... wrong with Sue?
9. Last month we visited ................... old church. It is in...................suburb of................city.
10 Mrs. Hoa .....................very good doctor.