—______,Tom, are these your books? —No, they aren’t .I think they are_______.
—Why did _____ take Aunt Molly almost an hour to get home ? —I don’t know . Maybe there was something wrong with her car .
—______will Mr. Green be back ? —In a week, I think .
It’s time to say goodbye to my school. I’ll always remember the people ____have helped me.
A: Listen! Is it Tina singing in the next room? B: No, it __________ be her. She is still in Shanghai.
—The children in rural areas have few books to read. Let’s ______ some books to them. —Great, it is a good idea.