Well, I said wearily, "I suppose some one must have stepped on it." 36 "Exactly," said Poirot, in an odd voice. 
It is possible someone stepped on it.
It was safe and on the table.
There is simply not enough SRC catalyst to meet demand.
Two men run down the street.
There are kids sitting.
humans walking in a city.
After taking a Longevity Test, you'll know how long you'll probably live.
The attractions below the neck were very conspicuous.