---- Flight 551 for Dallas ________. I must be off now.

   ------Have a pleasant trip then.

A.is being announced  B. has announced C. was announcing  D. had been announced

Everything comes with ________price; there is no such _______ thing as free lunch in the world.

A.a , a            B. the , /         C. the , a           D. a , /

Not knowing his address , she had some difficulty ________ his house.

A.finding         B. to find         C. found           D. find

China has a good ________ for fighting against the flu with its careful and smooth organization.

A. reputation     B. influence       C. impression       D. knowledge 

He once remarked that "All happy families ________ one another, but each unhappy family is unhappy in its own way".

A.like           B. appear         C. resemble        D. represent

American Indians  _________ about five percent of the U.S. Population.

A.fill up         B. bring up       C. make up         D. set up

The Internet connection for the entire area _________ when there was a sudden power cut yesterday.

A.lost            B. was lost       C. had lost          D. had been lost

-----Do you have a minute ? I've got something to tell you.

   -----OK, ___________ you make it short.

A.now that       B. if only        C. so long as          D. every time

Michael put up a picture of Yao Ming beside the bed to keep himself ________ of his own dreams.

A.reminding     B. to remind      C. reminded           D. remind        

-----I wonder if you could go with me to the supermarket.

------- Don't disturb me. I _____________my experiment report all the morning and haven't finished yet.

A.write      B. was writing       C. have written     D. have been writting