单项选择题
A. It is an interesting idea of a millionaire. B. It is a wonderful idea of a millionaire. C. It is a mysterious idea of a millionaire. D. It is a sudden and unreasonable idea of a millionaire.
A. when B. how C. whether D. that
A. If a person's clock goes wrong, nobody can repair it. B. Once an hour is gone, it will never come back to us. C. Time is as precious as sands in an hourglass. D. Sands can easily run out of an hourglass.