阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词或其适当的形式完成句子，使句子完整通顺。 小题1:It’s our duty to .(尽我们最大的努力去帮助残疾人 ) （try） 小题2:They closed all the windows (为了房间更加保暖).（order） 小题3:---Why don’t you go hiking in the mountains at weekends? --- (我害怕蛇) when I am in the forest.    (afraid) 小题4:--- (你是怎样了解到)the news?   (know) ---Teacher told me by sending a message on the mobile phone. 小题5:--- (你的哥哥长得是什么样的)？ ---He is of medium build, and he has short hair.    ( look ) 小题6:---Do you often listen to the music while you are doing housework? --- Yes, it （使我放松）when I am busy.    (make) 小题7:---How long have you been an English teacher? --- (自从我放弃了医院的工作)in 2000.    (give)