阅读下面短文，在空白处填入 1 个适当的单词或括号内单词的正确形式。
Festivals are occasions that allow us to relax and enjoy life. Their 56． (origin) range from the seasons of the year to important events. When it comes to celebrating festivals, different cultures actually have a lot 57． common. People celebrate the harvest festival after all the crops 58． (gather) in. Festivals are becoming more and more commercial, with businesses 59． (take) advantage of the celebrations.
At age 18, Dr Lin Qiaozhi chose to study medicine instead of marrying like the 60． (major) of girls. After graduation, she became the first woman ever 61． (hire) as a resident physician in the PUMC Hospital. When studying in the US in 1939, she impressed her American colleagues who invited her to stay. Dr Lin, 62．, rejected the offer.
San Francisco was able to rebuild itself after the earthquake that 63． (occur) in 1906.The Mission District, one of the oldest parts of the city, used to be a poor area of town, 64． is now a center for art, music, and food. When gold was discovered in 1848 near San Francisco, many people came to seek their fortune and some Chinese opened up shops and restaurants to earn 65． living.