请根据句子的意思和汉语提示完成下列句子，每空只填一个单词。
Don't ________________(暴露) your skin to the sun or you will be burned.
Water and salt are _____________(吸收) into our blood stream every day.
The class ___________________of (组成)56 members.
Industrial development is being_______________(集中) in the west of China.
An _________(精确的) Instrument is able to give you information that is correct to a detailed level.
The busy mother feels really _________(内疚的) at forgetting her daughter's birthday again.
There is a _________ (缺乏)of water in that city.
After the bell rang, the naughty boy ______________(挤) his book into his bag and went out of the classroom.
He tried to kill himself by taking _________________(毒药).
A bee has stung my hand and it is __________________(膨胀) up.