单词拼写（共10小题；每小题1分，满分10分）
用所给中文提示或英文单词的适当形式完成下列句子，使句子完整正确。
81. I will ________（简要地）share some interesting facts and stories with you.
82. A lot of newly-planted young trees were d__________ in the typhoon. 
83. During the festivals, the ___________（商业的）centers are crowded with people. 
84.  Your v___________ is too small; you need to learn more words.
85. After 32 years’ ________（缺席）, China returned to the Olympic Games in 1984.
86. PSAs are often placed for free and are intended to educate people about health, safety, or any other issue which affects public w__________.
87. It is our duty to make c_____________ to protecting the environment.
88. All of us finally agreed to his plan because of his p____________ language.
89. The campaign is i ____________to educate the public to protect the environment.
90. I’m sorry those coats are not ____________(可获得的,可买到的) in your color and size.