I'm free now, so I'm writing the blog in a PC room now.
In Wednesday, I felt unwell and I couldn't do my homework.
Therefore, I should have done my homework yesterday and my hours of sleep is 3 hours or less today.
How many hours of sleep do you need?
Moreover, I can't sleep on the desk well, so I can't catch up on my sleep.
If you have a good idea not to sleep in lectures, please tell me:-)
