My mind is in some disorder, which is not well." For about ten minutes he sat in dead silence, perfectly still, except for several expressive motions of his eyebrows, and all the time his eyes grew steadily greener. 
He didn't speak for a while.
He never stopped talking.
Poirot dozed off and no longer held his attention to him.
Something you wish for.
I started long before my pager stopped.
A female photographer is taking pictures near a stream.
Estimate how PM is concentrated
An extremely large gopher is running across a field.