Ah! Poirot studied her seriously. 
Poirot looked at her for a long time.
Poirot never looked at her.
Just under an hour.
Dublin has many dance company that perform.
I don't know where you people were.
A man is at home, fast asleep in his own bed.
The art instructor is showing a student how to paint.
It takes 20 minutes to give MAST.