随着我国经济社会的发展,许多热心市民利用业余时间参与社区卫生和绿化活动。热心市民这一举动,属于公民依法行使
---Did you listen to the lecture? ---Yes, I have never heard a ___________ one.
Travelling, talking with friends and relatives, and other forms of relaxation are very likely to _______ the well-being of metal health.
My elder brother has gone to Tibet to work as a volunteer teacher. Influenced by him, I also want to become_______when I graduate from the university.
People living in the desert choose to keep their ancient lifestyles and customs, _______people in cities throw away their cultural traditions.
The band played many songs, some of my favorites _______.