He pasted a poster on the wall.

This problem is very difficult.

He likes to paint the walls.

His face was covered with mud.

Applying plaster to the wall is difficult.

After the earthquake, a crack developed in the wall.

This mineral is called anhydrite.

This building is surrounded by firewalls.

His favorite vase is placed in this niche.

I thought his plan was perfect, but in fact there were some flaws.