单词拼写。
根据所给中文或首字母写出相应单词的正确形式（每格一词）。
1. He is complaining of all the flue usual flu __________（症状）- a high temperature headache
and so on.
2.Nowadays, more and more family problems __________（产生）from lack of communication.
3.Some of the material presented may not be __________（相关的）to you or your circumstances.
4.They supposed that their theories could explain conclusively the many natural __________（现象）.
5.We have so much work to do in our department, so the idea of laying off anybody from our
department is just __________（令人不可思议的）.
6.Nowadays an increasing number of people prefer to live in the country because they believe fresh
air is b__________ to their health.
7.With the flight d__________ by the storm, the passengers had to stay at the airport for the night.
8.We have every reason to believe that with proper measures taken, the current economic environment
will e__________ improve.
9.It’s t__________ of Bob to do a disappearing act just when there’s work to be done.
10.The drug, which is suspected of having serious side effects, has been w__________ from the market.