问题描述：
根据答句,用合适的疑问词或词组补全对话
_______is the poster about?
About our Earth.
_______modules are there in the book?
There are five.
_______can you stop the sandstrom?
We can plant trees to stop the sandstrom.
_______can I find these photos?
In this book.
_______are trees important to us?
Because they provide us with a lot of things.
_______is the poster about?
About our Earth.
_______modules are there in the book?
There are five.
_______can you stop the sandstrom?
We can plant trees to stop the sandstrom.
_______can I find these photos?
In this book.
_______are trees important to us?
Because they provide us with a lot of things.
问题解答：
我来补答展开全文阅读