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 81 briefly　　82 destroyed

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 81 briefly　　82 destroyed　　83 mercial　　84 vocabulary　　85 absence （简要地）share some interesting facts and stories with you.
82. A lot of newly-planted young trees were d86 welfare　　87 contributions　　88 persuasive　　89 intended　　90 available  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.