the shape of the DNA molecule is a double helix

He is engaged in an occupation of his own choice.

He safely completed a six-month chemotherapy treatment yesterday.

He is clever but tricky.

They escaped being punished.

Then we need only consult the list of first-class passengers and proceed by elimination.

Living organisms had existed on earth, without ever knowing why, for over three thousand million years before the truth finally dawned on one of them.

When the mural paintings were discovered in 1972, the stone chamber was filled with sediment running from an opening in the south wall, which was made by looters.

And if we see with our eyes only in the same manner as we do with glasses, the like may justly be concluded from analogy of all our senses.'

and lighted cigarettes outlined unintelligible 70 gestures inside.