58.　 Hu Jintao, the s_____ of the CPC, will pay a visit to the seven European countries net week.

57.　 He married s_____________ and kept it s_____________ from his family.　 　

56.　 Please be s____________ ,I want to have a talk with you .　 　

55.　 We s_________ the whole town but could not find a comfortable hotel.

54.　 She s______________ with fear at the terrible sight .

53.　 The half-time s_____________ of the match is 2:1.

52.　 The mother s_______________ the boy for not cleaning up his room.

51.　 Only by using a s_______________ method can we achieve our goal.

50.　 The sunrise on the top of Mount Tai is a wonderful s____________. 　

49.　 That will s_______________ us a lot of trouble .