.1. 在月台上和他们挥手再见，我为他们感到高兴，希望他们旅途平安。Waving goodbye to them on the platform, I felt happy for them and wished them a safe journey.2. 干完活后，我们立了一个牌提醒人们保护树木。After getting the work done, we put up a board reminding people to protect the trees.Having planted the trees, 3. 一到公园门口，我决定去照相。Arriving at the gate of the park, we decided to take some photos.4. 看到干净的路，我的邻居都笑了赞扬我所做的。Seeing the clean path, my neighbors all smiled and praised me for what I did. (gave me a thumb up)5. 下午，我直接去邮局把它
