1. "Hmm."
2. "Wha-?"
3. "You don't seem to have a fever."
4. "Are you ok?"
5. "Watanabe?!"
6. "Whoa!"
7. "Um... It is really tough, but..."
8. "I'm not sure if I'll be helpful or not, but..."
9. "Would you like me to hear you out?"
10. "I, uh... I was just thinking over a difficult problem."
11. "Ah, thanks."