Poirot alone seemed perfectly at his ease, and dusted a forgotten corner of the bookcase. 
Poirot seems calm and relaxed, and dusted the furniture.
Poirot seems shocked, and he trembled too much to do the cleaning.
In 1988 the postal service required a government bail-out.
He is sitting in silence.
some people in the picture
The reasonable-seeming approach may include some substantial over- or understatement.
The shopping center along Mount Road and Beach Avenu is the main part of town.
Gordon did not describe any difficulties.