听句子，选择正确答语。每个句子读一遍。 (     )1. A. I"d like to book
                four tickets, please.
(     )2. A. I want to travel
                 by bicycle.          
(     )3. A. Don"t worry.                        
(     )4. A. That"s OK.                         
(     )5. A. Yes, I would.                        B. Sure, what size do
      you want?                  
B. I am worried about the
    cost of our field trip.
B. That"s OK.                                 
B. I"d love to.                               
B. Yes, I"d love to.                            C. How about this one? 
C. I"d like to watch Beijing
     Opera one day.
C. No, thanks.
C. That"s a good idea. 
C. It"s an interesting
     place to go.