翻译一句话。（汉译英）

你知道为什么在我11岁时开生日party吗？因为我就要小学毕业了。
Do you know why I had a birthday party when I was 11 years old? That's because I was going to graduate from primary school.

Do you know why I'm having a birthday party when I am 11.Because I will graduate from primary school.

你知道为什么公开生日宴会当我 11 岁? 因为我将会从小学很快得到学位的

Do you know why I held the birthday party when I was 11?
Because I would finish my school.

I would graduate from primary school. That's why I held the birthday party when I was 11.
这样似乎更符合英语的表达习惯.

Do you know why I held the birthday party when I was 11 years old?That's because I was going to graduate from primary school.