问题描述：
The pandas are in danger because people cut down trees.对because people cut down trees提问.
_ _the pandas in danger
I think elephants attack people.(否定句).
I_ _elephants_attack people
_ _the pandas in danger
I think elephants attack people.(否定句).
I_ _elephants_attack people
问题解答：
我来补答展开全文阅读