---I’d like to book a round-trip ticket.

---Sorry, sir, but there are no tickets______ at the moment.

--- Who knocked the door? 

--- I’ve no idea. I just pretended nobody was at home, so I didn’t ask who ______ was.

—How wise of you to come round, but why?

—  ________ that all is right.

—What happened to your shoes？

—They want _____ ．

---Will you go to the annual meeting to be held in Sweden from the 26-30th of August 2008?

---That depends on _______ I am invited.

—The authors of computer viruses are geniuses.

—I agree. If they applied their wisdom to other net technology        human beings can benefit, it would be better.

-He was nearly killed by a car once．

-Oh, when was ________ exactly?

-It was in 2002 ________ he was riding a bike on the drive-way．

—Did the film                    your expectation?

—Yes.In reality it is the best film that I have ever seen.

---Really, I don’t know ________ to join the army or to find a job after my graduation．

---Why don’t you ________ your parents’ advice?They will surely help you．