11, Many children like to go to Thanh Ha village as they can make their own pottery there

12, Ba got good marks since he studies hard

13, Before playing soccer, we have to finish homework

14, While i was visiting the museum, my mother was going shopping

15, After closing the door, he went to bed

16→19: mình bổ sung sau

11.Many children like to go to Thanh Ha village as hey can make their own pottery there

12.Ba got good marks since he studies hard

13.Before playing soccer, we have to finish homework

14.I was visiting the museum while my mother was going shopping

15.He went to bed after he closed the door

16.My family live on selling the souvenirs

17.I'm trying to study hard so that I can keep up with her

18.We have to come up at the airport at 5

19.He will read the advertisement to know what it has been through

20.They will bring out a book about a famous person