Viết lại câu cho hoàn chỉnh

1.way/ others/ community/ a/ help / service/ is/ great/ to/ .
2. they/ community/ people/ because/ volunteer/ want/ improve/ to/ their/.
3.encouraged/ books/ people/ street children/ we/ to/ donate/ and clothes/ to
4. work/ done/ you/ ever/ have/ volunteer/ any?
5.free time/ Joe/ doing/ work/ spent/ most/ at/ his/ local hospital/ a/ of/ volunteer.
6.what/to/help/we/can/do/the environment/clean?