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 .