W: Wake up. It's almost eight o'clock. M: No, please. Let me sleep on! I couldn't get to sleep until 3 o'clock this morning. W: Why? What's wrong with you? M: I felt pain all over my body. Can you get me some medicine? W: Will aspirin do? M: No, aspirin isn't strong enough. W: Then I can do nothing but call for a doctor., Question: Why did the man get to sleep so late? (A) He is doing some medicine research. (B) He talked with his friend. (C) He felt pain.
(C) He felt pain.