Have you seen my screwdriver?

He was playing by bouncing a superball.

He exhausted his strength to finish the work.

He is in mourning for his father.

He rubbed his hands together to get warm.

The committee approved the new project.

His power is so great that it could destroy the world.

He used a screwdriver to assemble the furniture.

He edited the photo using superimpose technology.

This fossil is a part of a silicified tree.