Oh, here's Monsieur Poirot. 
Oh, this is Monsieur Poirot.
Oh, Monsieur Poirot is not around.
Weaknesses are almost always overlooked by the marketplace.
many people are walking outside
The woman is staring at the computer screen in the library.
A girl is outside sweeping.
I shook my head.
The book is a terrible one that will brainwash your children.