① The man who we suspected was a thief proved to be a policeman.

② He had not experienced that which all fiction taught him was the most important thing in life.

③ Many of the qualities we think are typical of Americans in general are the result of their frontier life.

④ He went out of the car, but the cool fresh air, which he had hoped might be refreshing, merely made him feel the more unpleasant.

⑤ Hobbes, one of the greatest English philosophers, used to sing songs every night in his old age when all were gone and nobody could hear him for his health which he did believe would make him live two or three years longer.