I'm sorry I__to take your books here.

I'm sorry I__to take your books here.
I'm sorry I__to take your books here.

I'm sorry I__to take your books here.
I'm sorry I (forget)to take your books here.
我很抱歉,我忘记把你的书带来了.

forget
我很抱歉我忘了带你的书来。

I'm sorry I_have_to take your books here.
我很抱歉不得不把你的书带来这儿