54．He is not          ．So he is not allowed           his father’s ear．

     A．old enough; to drive                  B．old enough; driving

     C．enough old; to drive                  D．enough old; driving

53．――We can use QQ to talk with each other on the Internet．

    ――Really? Will you please show me           it?

A．what to use       B．how to use          C．where to use      D．when to use

52．I like exciting trip．I’d love to walk           the Amazon jungle next summer, because      it’s a good place to explore．

A．across            B．through            C．along                      D．around

51．――How about the young lady?

    ――It’s hard to say, but her voice           beautiful．

A．sings             B．hear              C．listens                     D．sounds