1. We got lost on the Metro—it was quite an __________(冒险).
2. I’m trying to __________ (安排) my work so that I can have a couple of days off next week.
3. The sun was hot, and there were no trees to offer us __________ (树阴).
4. Recent __________ (发展) in medical science mean that this illness can now be cured.
5. He put on some soft music and turned the lights down in order to give the room a bit more __________ (气氛).
