Most people have no idea of the hard work and worry that goes into the collecting of those

fascinating birds and animals that they pay to see in the zoo. One of the questions that is always asked of me is【C1】______I became an animal collector in the first【C2】______. The answer is that I have always been interested in animals and zoos. According to my parents, the first word I was able to say with any【C3】______was not the conventional "mamma" or "daddy",【C4】______the word "zoo", which I would【C5】______over and over again with a shrill【C6】______until .someone, in order to【C7】______me up, would take me to the zoo. When I【C8】______a little older, we lived in Greece and I had a great【C9】______of pets, ranging from owls m seahorses, and I spent all my spare time【C10】______the countryside in search of fresh specimens to【C11】______to my collection of pets.【C12】______on I went for a year to the City Zoo, as a student【C13】______, to get experience of the large animals, such as lions, bears, bison and ostriches,【C14】______were not easy to keep at home. When I left, I【C15】______had enough money of my own to be able to【C16】______my first trip and I have been going【C17】______ever since then. Though a collector's job is not an easy one and is full of【C18】______, it is certainly a job which will ap peal【C19】______all those who love animals and【C20】______.

【C1】

A．how

B．where

C．when

D．whether