—How do you usually go to school? —I usually go to school ______.
It ________ over ten years since the dog ____________.
--- Have you finished your work _______?---Yes, I've _______ finished it.
great fun it is to fly in a balloon!
—It’s too hot. Would you mind _______ the door?—_______, please do it now.
It was exciting to see so many elephants__________.