Finallytheofficalshadtofollowtheboy’sidea,andaboat

问题详情：

Finally the officals had to follow the boy’s idea, and a boat ___ the elephant.

   A. used to weigh                B. was used to weigh C. was used to weighing       D. used to weighing

【回答】

B 

知识点：相似 相近词比较

题型：选择题