He is refining his swordsmanship every day.

He used a furnace to smelt the metal.

The history of the Soviet Union is very interesting.

He rambled on and on.

Under the Japanese bead tree, he was reading a book.

There is a factory for refining iron on the outskirts of the town.

I eat spinach every day.

I bought a new ream of paper.

We are active as a group of students.

He tightened his hands due to tension.