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When you are in Britain, you often see people go out with _______ umbrella or a raincoat on a sunny day. Why? Because the weather in Britain often changes (变化) quickly. The same weather _______ stay long. People can have different seasons in one day. In the morning, the weather is warm like in _______. After an hour, black _______ come and then it rains. The weather gets cold. But in the afternoon, the sun will begin to shine, and it will be summer at this time of a day. The weather is always changing. _______ interesting it is!