Finish the sentence by completing each blank with a word. The first letter of each word is given.

1. The custom of w_____ ancestors is a beautiful and rich tradition in Vietnamese culture.

2. The custom of sending a greeting card has become a d_____ tradition in many western countries.

3. A country's cultural h_____ is a valuable resource.

4. Festivals, which are handed down from one g_____ to the next, are an important way to promote tourism.

5. Besides the key i_____, another secret to achieving the perfect fish and chips is the temperature of the oil.