阅读短文,回答下列问题。 Sue: What are you going to do this weekend? Ben: I am going to plant a tree in my garden. Sue: A tree? Ben: Yes, just a small one. Sue: How do you do that? Ben: First, dig the soil, then put the plant in the soil. Sue: That's all? Ben: Then you have to water it and wait for it to grow. Sue: That sounds interesting! Ben: Come to my house this Saturday afternoon. We can do it together. Sue: That's great. 1. Does Ben want to plant a tree in his garden? 2. When is Ben going to plant the tree? 3. Does Sue know how to plant a tree? 4. What does Ben first do to plant a tree? 5. Is Sue going to plant the tree, too?