I reserved a room at the hotel.

He is learning about the human skeleton.

This specimen is preserved in formalin.

He used tinder to start a campfire.

The mast is swaying in the wind.

It's better for him not to know the truth. After all, ignorance is bliss.

This fish has already been boned.

We are reserving those funds for the future.

We made a reservation for the room.

He started walking at a fast pace.