单项选择题
W：How long will it take you to fix my car M：I’ll call you when it’s ready, but it should not take longer than three days．
A. In a day. B. In two days. C. In 3 days. D. In 4 days.
A. He was the youngest American elected president. B. He was the richest American elected president. C. He became president because he fought in the World War II. D. He became president because his family had suffered scandals.