Mệnh đề liên hệ 21. A dictionary is a book. It gives you the meaning of words 22. The man was very kind. I talk to him yesterday 24. The children are playing soccer in the stadium. Do you know them? 25. The little boy lost his way. He is crying over there 26. Kim Lien is a village. HCM was born and lived there 27. HN is an ancient city. Many customs are still on this lovely area 28. Vu Quoc Viet is a famous artist. I love his works very much 29. Teacher's Day is a day. All the students show their gratitude to their teacher on that day 30. Quynh Dao is a famous writes. Quynh Dao's works are widely read all over the world 31. Sa Pa is a famous city. Many visitors travel to this city for their holiday