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When you are in Britain you often see people go out _________ an umbrella or a raincoat on a sunny day. Why? _________ the weather in Britain often changes (变化) __________. The same weather doesn't stay _________. People can have four seasons in one day. In the morning the weather is warm like in _________. After an hour, black _________ come and then it _________. The weather gets _________. In the afternoon it is _________. The sun begins to shine, and it is hot like in summer at this time of a day. The weather is always changing. How _________ it is!