A：Dear son，you look unhappy．（1）　　？

B：I am leaving school in ten days．I want to show my thanks to the teachers．But I don't know what to do．（2）　　？

A：Certainly．I think you can sing a song with your classmates for them．

B：Sounds good！（3）　　？

A：On the playground or at the gate of the school．

B：OK．And what can I do for the school？

A：（4）　　？

B：Planting a tree？Emm，it is good for the environment of the school．Thanks，Mom．

A：（5）　　Hope things work well．