The book _____ be Tom’s.—No, it _____ be his. There’s a name on the book. It’s Jim’s.

They must have finished the work, ______?

Please stop smoking. Look at the sign. — Oh ,sorry. Isee it.

So far this year,many new houses in this area with the help of the government. — It’s great.

Students should stay at home ________school nights.[ ]