今天我一整天都很忙，在公司有重要的会议

今天我一整天都很忙，在公司参加重要的会议。之后客户打电话给我讨论问题。再看时钟，我发现已经十二点了，所以就回家吃午餐。

现在我一边听音乐一边写句子，我很喜欢听音乐。它总是让我觉得很安静。我觉得有点困了，而且我的背痛，所以写完文章之后我会睡觉，好舒服啊！

今天的天气还好，有点阳光，有点多云，中午去上班我看着草地里面的小鸟，它们很开心地吃和玩。

Comments：

1. Several things I corrected are not literally wrong, but it is not the way people say it in daily life. 

2. “所以就回家吃午餐”中 “我” is not necessary, as it is the same subject as the main sentence

3. "现在我正在一边听音乐一边写句子" 中 ”一边。。。一边“ implies the happening tense, and therefore normally won't use together with "正在”

4. Go to bed is 睡觉 in Chinese, in old days, we also use 上床睡觉，but 上床 means having sex nowadays. So people stopped using it to mean I am going to sleep

5. Good job in general! influent in expressing the idea