It was very late, but the teachers were ________ working hard in the office.

-- Mr John, would you please speak a little more ________ ?-- Sorry !  I thought you could follow me.

—        is the ticket of the museum for children? — Well, it’s free for everyone.

—My mom was mad at me last night. What should I do?—Please say sorry to her________.

---______ do you go shopping, Mary? --- Twice a week.