单项选择题A．Many of them found it difficult to exercise on a plane.B．Many of them were concerned with their well-being.C．Not many of them chose to do what she did.D．Not many of them understood the program.

单项选择题A．The reported hero turned out to be his father.B．He did not understand his father till too late.C．Such misfortune should have fallen on him.D．It reminded him of his miserable childhood.