. –Who is absent today?–_______ is absent. We are all here.
Excuse me. I _________ I was blocking(挡) your way.
Though the key was pressed, nothing ______ on the screen.
---You never have sweet snacks, do you? ---________. Though I know they’re bad for our health.
He was often seen _________ with charity work last year.
Please don't stand up in class until you.