11. The customs of Western countries are totally different.
12. In Tay families, old people usually stay at home to look after the house.
13. Where is the hat that I bought yesterday?
14. The Alps are the highest mountains in Europe.
15. Wool is one of our chief exports.
16. We had dinner with our old friends on Saturday evening.
17. She got over to see me last week, and she said it was the last opportunity she could have for me.
18. They lay down on the ground and looked up at the sky.
19. You can find the information you need at the top of page 41.
20. My mom is the best mom in the world.
21. The youngest boy has just started going to school.
22. Mary likes to play the guitar, but her brother prefers to play chess and football.
23. [There's no text in this line.]
24. Da Nang is the third biggest city in Vietnam.