As follows:
1.In the air, I can see the flying birds; on the ground, I can hear the insects chirping; in the water, there are fish swimming; in the classroom, there is the sound of reading aloud.
2. I study in the classroom, swim in the swimming pool, read books in the library, and walk in the park.
3. Whether on the table in the car in the garden or on the ground is where we have fun.
4. In the park in the morning, some people are running, some are doing calisthenics, some are dancing with swords, some are playing shuttlecock, and some are playing with air jugglers.
5. In the spring, wildflowers bloomed in the mountains; in the summer, frogs called in the fields; in the fall, the leaves all fell off; in the winter, snowflakes drifted down.