A、The size of the room. B、Long working hours. C、The hot weather. D、The fan in the room. C

W: I often mistake Jim for Bob. Can you tell them apart?
M: No, they look so much alike that they even confused their mother sometimes when they were young.
Q: What is the most probable relationship between Jim and Bob?

M: It’s so hot today, I simply can’t work. I wish there were a fan in this room.
W: So do I. I’ll fall asleep if I stay here any longer.
Q: What are they complaining about?