He often gets up very late. He _________ takes exercise in the morning. 

Mary doesn’t like blue, so her mother ____ buys blue clothes for her.

---What do you think of your boss?---He always work hard and he is ____________ late for work.

---How is Susan? ---Oh, she lives abroad, so I ______ ever see her.

—Have you ___________ been to Beijing? —Yes. But only once.