A girl     1    (name)Dina was born in California in 1932. After     2    (graduate) from university in 1954, she worked at a children’s hospital in Kentucky for several years. However, her interest in animals inspired her     3     ( take)her first step towards her future work. In 1966, she went to Africa to study rare mountain gorillas

Even though some of the gorillas were quite dangerous, this didn't not discourage her. She showed great     4     (devote) to her work and loved to tell people about gorillas. Dina was an outgoing and kind person and had the ability to gain valuable data about their lives by becoming a     5    (company)to them. She wrote a book about the gorillas she had lived     6     It is thanks to her research     7    we now know more about mountain gorillas. Her love for the gorillas teaches people about dangers these animals     8    (face)with. Now they are protected by governments and various organizations.     9    her work, there would be very few mountain gorillas left today. She has received world’s     10    (famous)around the world and is now regarded as one of the heroes of the 20^th century.

2 . Whether enveloped by the thick smog from factories or unseen poisons from vehicle waste gases, many cities around the world are losing the battle against air pollution．

Somewhere, many people died from breathing in the smoke and harmful gases     1     (pour) into the air．In China and India, the damage of this poisonous air is particularly alarming,     2     (cause) three million deaths in those two countries．As a result, some out-of-breath citizens are turning to bottled air．

Many companies are compressing fresh countryside air into bottles and     3     (sell) it online．It sounds like a joke but the idea is to raise     4     (aware) and it provided people     5     fresh air at a price．One such company is Vitality,     6     collects air from the Canadian Rockies and compresses it into container．Vitality started the business to sell the canned air as joke gifts at first．     7    , the products took off in a     8     ( surprise) way then．So, the manager came up with the business idea     9     they can sell fresh air over the world．The manager of the company   has   made     10     clear that China, India and South Korea have become its main markets．