My grandfather likes to repair old pendulum clocks.

My biological clock is disrupted, and I've been having sleepless nights.

I went to the watch store to buy a new wristwatch.

He is the best clockmaker in town.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

The Paleogene period was a very important time in the history of the Earth.

He started walking around the room in an anticlockwise direction.

He is good at repairing ancient automaton clocks.