1. All the plan was _______（打乱）by the sudden change of the weather.
2. He prefers to work ________（在户外）, for he can have more time to get close to nature.
3. It will be a long time for him to _________（恢复）from the bad cold.
4. When I saw him in the street，I stopped and smiled，but he _______ （不理会） me and walked on.
5. The snow is very _______ （松的） and there is a lot of air in it.
