1. (2019九上·盐城月考) What is the relationship between Jim and Bob?

I often mistake Jim for Bob. Can you tell me the difference?<br />No, they look so much like. Even their mother didn't know, who was who when they were young.<br />I often mistake Jim for Bob. Can you tell me the difference?<br />No, they look so much like. Even their mother didn't know, who was who when they were young.