I. Give the correct form of TO BE : is / am / are ( Chia dạng đúng cua động từ to be )
1. I ( be ) ……………a doctor.
2. They ( be ) ………………tall .
3. He ( be ) ………………old.
4. My friend and I ( be ) ……………….good friends.
5. …………..( be ) this your house ? – Yes, It ( be ) ………………
6. The children ( be ) ……………….lovely.
7. Phong and Nam ( be ) ………….ten years old.
8. How many books ( be ) ………..there ? There ( be ) …………one.
9. There ( be ) ………………twenty students in my class.
10. There ( be ) ……………some milk in the kitchen.
11. Her lips ( be ) ……………thin.
12. My sister ( be ) …………….very nice.
13. What ( be ) …………those? – They ( not be ) ………. shoes.
14. Nam ( not be ) ……………..a hard- working student. He ( be ) …………late.
15. It ( not be ) ………….often hot in the winter .