89. Tens of thousands of soldiers were sent to Sichuan to r　　　 the people trapped in destroyed buildings.

88. Loulan is believed by many people to have been g_____________ covered over by sandstorms from AD 200 to AD 500.

87. PSAs are often placed for free and are i______________ to educate people about public welfare issues.

86. There are many black clouds in the sky. It is l______________ to rain again. 　

85. Dropping an old sport will help ______________ (确保) that the IOC can keep the Olympics under control.

84. The programme examines the role of women in ______________ (现代) society.

83. If you would like to go traveling, Shangri-la would be a good ______________ (选择).

82. He was too ______________ (没经验的) for the job. He worked here for only three days.

81. At the museum, visitors are requested not to touch the _______________ (展品).