One day a police officer managed to get some fresh mushrooms. He was so pleased 【C1】______

what he had bought that he 【C2】______ to share the mushrooms with his brother officers. When their breakfast 【C3】______ the next day, each officer found some mushrooms on his plate.

"Let the dog try a piece first," suggested one 【C4】______ officer who was afraid that the mushrooms might be poisonous. The dog seemed to 【C5】______ his mushrooms, and the officers then began to eat their meal saying that file mushrooms had a very strange but quite 【C6】______ taste.

An hour later, however, they were all 【C7】______ when the gardener rushed in and said 【C8】______ the dog was dead. 【C9】______ the officers jumped into their cars and rushed into the nearest hospital. Pumps were used and the officers had a very 【C10】______ time getting rid of the mushrooms that 【C11】______ in their stomachs. When they 【C12】______ to the police station, they sat down and started to 【C13】______ the mushroom poisoning. Each man explained the pains that he had felt and they agreed that these had grown 【C14】______ on their 【C15】______ to the hospital. The gardener was called to tell the way 【C16】______ the poor dog had died. "Did it 【C17】______ much before death？" asked one of the officers, 【C18】______ very pleased that he had escaped a 【C19】______ death himself. "No," answered the gardener looked rather 【C20】______ . "It was killed the moment a car hit it."

【C1】

A．of

B．about

C．with

D．at