( )51. The son wants his mother _______ him up at six o’clock every day.

　　A. to ring B. ring C. rings D. ringing

　　( )52. --- I often use Hotmail to send e-mails.

　　--- Really? Would you please show me _______ it?

　　A. how can I use B. what can I use

　　C. how to use D. what to use

　　( )53. Tell the boy _______ out of the window.

　　A. not to look B. to not look

　　C. don’t look D. not look

　　( )54. Did you hear her _______ in the next room just now?

　　A. singing B. sing

　　C. to sing D. sang

　　( )55. How long does it take you _______ your homework every evening?

　　A. finish doing B. finishing to do

　　C. to finish doing D. finish to do

　　( )56. Have you decided _______ ?

　　A. to go with whom B. whom to go with

　　C. whom go with D. with who to go

　　( )57. Remember _______ the lights when you leave the office.

　　A. to turn off B. turning off

　　C. turn off D. to turning off

　　( )58. Her hope _______ the 2008 Olympic Games.

　　A. to take part in B. is to take part in

　　C. taking part in D. will take part in

　　( )59. The room isn’t big enough _______ so many people.

　　A. holding B. hold C. to hold D. holds

　　( )60. You’d better not spend more time _______ computer games.

　　A. for playing B. in playing

　　C. to play D. plays