问题补充:
--- The young man spent as much time as he the experiments.
--- No wonder he succeeded .
A. did; by the end
B. could doing; in the end
C. could doing; at the end
D. could to do; in the end
答案:
A. did; by the end
(答案→)B. could doing; in the end
C. could doing; at the end
D. could to do; in the end
解析:可联系答案网客服索取此答案。