Last week, my friend asked me to go to the park with him, I was so happy to say yes.

上周，我的朋友叫我和他一起去公园，我很开心地答应了。

But when that day came, I forgot about our date, I overslept and then stayed at home, watching the TV series.

但是那天到来的时候，我忘记了我们的约定，我睡过头了，并且呆在家里看电视剧。

When my friend called me, I suddenly thought of our date, I was so sorry, it is my fault.

在朋友打电话来的时候，我突然想起了我们的约定，我很抱歉，那是我的错误。

I must take some action to make up my fault.

我必须做一些事情来弥补我的错。