-The plane is due to take off at 7∶50 from the airport．

-________ we fail to arrive there in time?-Try to take another flight then．

-What about this pair of shoes?

-I’m afraid they are ________ too large for me．

—Bob has gone to California.

—Oh, can you tell me when he        ?

—What is an ideal team leader like?

—He ______ be responsible, determined and creative．

---Excuse me, what can I do for you?

---Yes. I'd like to place ______ advertisement for _______ used car in your paper.

—What are you doing,Mum?

—I am______the carpet in order to get rid of the dust in it.

--Do you think it wise for parents to do everything for their children? 

--No. That’s ______ they’re mistaken.

---Did they tell you the final decision of the committee?

---No, they didn’t, but I think I ought to ______.

---I feel really disappointed not to have got that job．

---Don't worry, maybe something better will ______．