Jim was so interested these difficult math problems that he forgot to have supper. A. on B. in C. with 答案: B be interested in 意思是对某事物很感兴趣.in 是介词.其后要接名词.代词或动词的-ing 形式. 【查看更多】
题目列表(包括答案和解析)
Jim was so interested ________ these difficult math problems that he forgot to have supper.