1. This is the first time I have participated in a community project.
2. They have provided the elderly with cheapbus tickets some days
3. Jack is not rich, but he gives the beggar some money ( có thể dùng however ở giữa nhưng có ; và ,)
4. The students last participated in the clean-up program in 2018
5. I have never seen the dirty beach like this.
Let's go to a clean beach. ( sao lại có let's nhỉ :v )
6. Let's join a programmer that helps the elderly
7. There are too many advertisements and graffti on the wall
8. He started colleting clothes for street kids two years ago.