单项选择题
Fat her meant him ()into business, but he chose to study medicine.
A. going B. to have gone C. to go D. having gone
单项选择题 Since you need to catch an early train tomorrow morning, we () now.
单项选择题 ()tell us everything, we could try to solve his problem.
单项选择题 It was 12 o'clock ()the plane took off.
