用所给单词的正确形式填空（共10小题，每小题1分，满分10分）
小题1:At the same time we are taking measures to _____________ our natural resources.
小题2:The factory pours a lot of waste into the river and now the _______water is not fit to drink.
小题3:They two have been _____________ about the problem for about half an hour, but neither is willing to give in.
小题4:Some local families will provide ___________ for the exchange students.
小题5:The hurricane was really _______________.Many people were scared.
小题6:Considering there are many people in developing countries still don’t have enough to eat and no place to live in, many countries agree to work togehter to reduce ______________.
小题7:Honey, take your coat with you. Last night it snowed heavily and it might be ______________ cold today.
小题8:Do you know who ____________________ the computer?
小题9:The Japanese hold the view that the types of blood are related to people’s characters, so they take them ________.
小题10:With many forests __________ , animals have lost a lot of inhabitants.
