书面表达：今天是星期天，天气晴朗又暖和，现在已经是中午时分了，你和你的家人---爸爸、妈妈还有一个妹妹，正各自做着自己的事情。请试着用进行时态（be +doing）描述一下，不少于50字。开头如下：
It’s Sunday today.
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