4. 

Lan used to walk past the mosque on her way to primary school.

5. I wish I had more time to get to know your beautiful country better.

6. They used to go swimming together in the summer.

7. My grandfather wished to be a famous pilot when he was young.

8. They have been pen friends for over a year but this is their first visit.

9. If only she could come here to enjoy the song performed by Alan Walker.

10. Nowadays, learning a foreign language is compulsory for children of all ages.

11. I'll do the washing up if you do the cooking.

12. I wish I were better at teamwork so I could be a lawyer.

13. Students in Vietnam can prepare in many different ways for their future jobs.

14. The first reason why tourists visit Thailand is they want to meet the local people.

15. Dalat would be a great place for anyone who is planning to go on a vacation.

18. My teachers says I should spend more time studying Japanese but it's too difficult to understand.

Chúc em học bài tốt!