我本该上周就归还图书馆的书,但我太忙了而忘了这件事的英文翻译是什么

I should have to return the books in the library last week, but I'm too busy and forget to the English translation of the matter is

I should have returned the book last week, but i was too busy to forgot it.

I should have returned the book borrowed from the library last weeek,but I was too busy to forget this thing.

I was too busy to call you last week. I am sorry that I was so busy last week that I did not call you. I'm so busy that I