___ Mr. Smith is waiting to see you. He ...

– There are 60 students in my class and 45 of them use weibo very often.

– 45? That means about         of your classmates are weibo users, right?

A. half            B. two thirds              C. three quarters

–         did Prince William's wedding last?

– It lasted for about 5 hours.

A. How far                 B. How long            C. How soon  

When you read, don't         every new word in the dictionary. Try to guess its meaning.

A. lookup            B. work out           C. give up

There are no customers in the hotel. It ______ have the friendliest service.

A. can’t              B. must                    C. may

–Which one do you want to buy, an ipod touch 4, an ipad 3 or an iphone 5 ?

–         . They are too expensive.

A. All                  B. None                C. Neither