英语填空 必要可加助动词或情态动词

问题描述:

英语填空 必要可加助动词或情态动词
find,provide,live
A snow leopard()in a village in gansu province this spring.
Animals are() textbooks for young people to know the animal world.
The travel agency ()us a bottle of water every day.

was found 被发现
living 活着的教本
provides 每天提供 所以用单数形式加S