The young surgeon________his first operation successfully.
— Look! Somebody _____the sofa.— Well, it wasn't me. I didn't do it.
_____ on folk tales, Mo Yan's novels become a mixture of fantasy and reality.
No matter how busy he is, he makes _____a rule to surf the Internet for information.
— Tom was late for work this afternoon.— _____?As far as I know, he is fairly punctual.
— I rang you at about nine, but there was no reply.— Oh, that was probably _____I was seeing the doctor.