I’m having trouble phrasing this sentence, I’d be grateful if somebody could help me:
For the past ten days I’ve pretended to revise, appeared studious in front of my teacher, and slept on my books when the classroom was/is empty.
I’m trying to write it in present perfect. Is the beginning correct, particularly the word “past”, does this make the time duration too specific and therefore an incorrect form of present perfect.
And also, I know, or I think I know, that I could write
and slept on my books when he has left the classroom.
But I’d still like to know if was or is should be used.