A

1. van cao was born nov 15th, 1923 in nam dinh in a poor family 

2. he started composing music when he was young

3. he wrote his first son gin 1939 and quickly became famous 

4. it is going to rain because there are a lot of black clouds in the sky 

5. it was not until 2006 that i really became a doctor

B

6. it was not until tom suggested that we were invited....

7. it was not untl i was ten that i knew how....

8. mary gets up early in the morning so that she can learns her lessons 

9 they trained bery hard to win the football match 

10. how does mrs green go to work 

11. when was van cao born 

13. we were disappointed about the movie

14. i am not fond of watching horror films

15. my brother is interested in cartoon films