chọn a/an hoặc rỗng để hoàn thành các câu
1. M.r Thanh has ................appointment at 4 o'clock........................this afternoon
2. yesterday ................dentist fill cavity in my tooth
3. what's .................wrong with Sue ?
- she has ................toothache
4. last month we visited...................old church. It's in ..................suburb of ..............city
5. Mrs. Quyen is ......................very good doctor
Loga
Sinh Học lớp 12
