1．Air ________ (费用) have shot up by 20%.
答案：fares
2．Students need to learn how to ________ (组织) their work.
答案：organize
3．He ________ (决定) to rescue his two students.
答案：determined
4．Jack and Mary described their ________ (旅行) in vivid detail.
答案：journey
5．If the windows are shut, air cannot ________ (流动) freely through the building.
答案：flow
6．It's said that public t________ in Germany is excellent.
答案：transport
7．If you argue with him, he says you are s________
答案：stubborn
