Japp was regarding Poirot with comical perplexity. 
Poirot was being observed by Japp in a hilariously perplexed manner.
Japp looked at Poirot in a way which suggested he fully understood what was going on.
Occasional perilous walks to the Borders is a world of adventure that the world will be not be content to support.
The man is laying in a hammock.
In the meantime, D.C.
Perhaps, or perhaps not.
You have to have oil heaters for your car.
The chemist sent the box out with his printed name on it.