We have done things we ought not to have done and ________ undone things we ought to have done.
It was in the rice fields ____ we had our league meeting.
--Have you moved into the new house? ---Not yet, the rooms ______.
—It is strange that Dave didn’t respond________any of my emails. —Something must have happened to him.
Too much drinking will do________to your health;you should take the doctor’s advice.
—How long have you________? —It is about ten years since we________.