---Nobody but John and Tom ________ still in the lab as I passed by last night.

---What on ________ earth ________ they?

---What was he before?

---He was ______ medical worker before he turned ______ writer.

—I’m going to order chicken and salad．What about you?

—            .I’ll have the same.

--- Could I take a few days’ leave, sir?

--- I’m afraid you can’t _______ the work is being done.

---How soon do you think the economy will recover?  

---______?

—Have you finished all your exercises?

—Yes, ________ is left. As a matter of fact, they are as easy as ABC.

—I'm sorry. I shouldn't have been so rude to you.

—You ________ something not very nice to me, but that's OK.

--- When does your plane take off?

--- At 3:00 p.m. tomorrow, I’ve just called the airport to ______it.

---What do you think of the editor?

---He is really ________ .