根据句意及汉语提示，填入适当单词完成下列句子。
1. There are many trees and ___________ (灌木从)in the garden.
2. There are some ___________ (抢劫者)in the building.
3. People have different __________(能力).
4. It’s __________ (必要的)to give them clean water if you want them to be healthy.
5. How _________ (可怕的) the traffic was!