Today

Today,I had a class in university from 9 o'clock. <em>had is past and past participle of have.</em>

Today, on 9 o'clock I have  class in the university.

But I woke up at 8 oc'lock 20 minutes....

But I woke up 8:20 in the morning.

I couldn't eat breakfast because I don't have time when I eat anything.

Because I'm in a rush, I couldn't eat my breakfast.

Today

Today, I had a class at the university at 9 o'clock.
But I woke up at 8:20 minutes....
I couldn't eat breakfast because I didn't have time to eat anything.