She sat down again and looked up at the big clock.
Everybody is looking at a big clock on the wall.
The only thing moving was the second hand on the big clock, and then when it hit the top everybody started to move.
Every eye turned to the big clock above the window.
It was five to seven, according to a big clock on the wall.
The big clock showed it was already more than half over.
It was beginning to look like the world's biggest clock.
I was watching the big clock, waiting for the minute hand to move.
He could see a big clock hanging over its window.
According to the big clock on its wall, they still had a while before their train pulled out.