摘要： 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.
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Jim was so interested ________ these difficult math problems that he forgot to have supper.
- A.on
- B.in
- C.with
- D.at