He was imprisoned as a political offender.

He was immersed in music.

He was dragging the heavy luggage.

My high school has very strict rules.

He was arrested for obstruction of public duties.

My father is spreading phosphate fertiliser in the field.

I met him for the first time in a long time.

The afternoon classes are more difficult than the morning classes.

No, that is incorrect.

Taku decided to find a new hobby to expand his horizons.