Упражнение 8. Исправьте грамматические ошибки.

Let’s meet in five o’clock.
They have dinner now.
Do you go to the library after classes tomorrow?
Do you get up this morning at 7 o’clock?
I didn’t met my best friend yesterday.
I has already done my household duties.
He did not visited the British Museum.
We were talking about famous writers now.
We have already come there yet.
When I shall return, I shall call you then.