1. Answer: D. preserve  
   Explanation: "Preserve" means to maintain or protect something so that it remains in its original state. In this context, it indicates that the people in the town are trying to keep their traditional crafts alive.

2. Answer: C. remember  
   Explanation: The phrase should read "remind me." This means that the souvenirs trigger memories of the good times. "Remember" is not the correct form here.

3. Answer: C. facilities  
   Explanation: "Facilities" refers to the physical amenities that make a place enjoyable, such as restrooms, picnic areas, and play equipment. This fits the context of improving a park for community enjoyment.

4. Answer: D. where  
   Explanation: "Where" is used to ask about a location or place. It makes the most sense given that Huong is questioning where she can find souvenirs.

5. Answer: B. handicrafts  
   Explanation: "Handicrafts" refer to items made by hand, emphasizing creativity and skill. This fits the examples provided, such as jewelry and pottery.

6. Answer: B. on  
   Explanation: The phrase "get on" means to have a good relationship with someone. It is commonly used in English to express that two people get along well.

7. Answer: C. speciality foods  
   Explanation: "Speciality foods" refer to unique dishes or recipes from various cultures. This choice indicates that the sister is interested in experiencing local culinary delights during her travels.