Finallytheofficalshadtofollowtheboy’sidea,andaboat___t...

問題詳情：

 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

知識點：動詞語態

題型：選擇題