Traditionally, rural villages in Vietnam produced handicrafts when they were not busy with planting or harvesting crops(19). Over time, many villages developed the expertise to make specialised products (20)and so particular villages became famous for such things as weaving, woodwork, lacquer work and metal products. With industrialisation many villagers moved to the cities but maintained their craft skills and networks to produce products for the city market, for example craft villages make furniture, grow flowers or make utensils for the urban population. Other villages changed from making traditional crafts to producing different products desired by an industrialised society. For example, the villagers of Trieu Khuc changed from traditional paper making to recycling plastic. There are now many craft villages in Vietnam based on recycling plastic, paper or metal.
19. A (ý mình đã bold và underline r nhé)
20. B (ý mình đã bold và underline r nhé)
21. B (maintain là kiểu duy trì á, mà conserve cũng mang nghĩa giống vậy)
22. C (câu C trên đề ko có)