28．Let's ______to the Summer Palace tomorrow．

     A．to go              B．will go             C．go                   D．going

27．I _________ singing to dancing．

    A．like                B．enjoy              C．love                 D．prefer

26．I'm thirsty．I'd like ____________a glass of water．

      A．drink                B．to drink           C．drinking              D．drank

25．―Did you ________ to have straight hair?  ―Yes, I did．     

      A．used to             B．used                C．use                 D．used to be

24．I am a League Member．I volunteer my time ___________others．

     A．help                B．to help                     C．helping               D．helped

23．Did you _________ much money on the car?

    A．cost               B．pay               C．spend                D．take

22．My parents want to go ______on vacation．

    A．somewhere peaceful                     B．dangerous somewhere

    C．somewhere boring                        D．fascinating somewhere

21．I'd like to trek __________ the jungle．

    A．through            B．across                C．over                D．on

20．Beijing is one of the ____________ in the world today．

     A．busiest city          B．busiest cities         C．busy city              D．busy cities

19．I like the music that I can sing_______________．

    A．along and           B．along with           C．with                  D．along