Read the jokes and fill in the blanks.

I lived on the first floor in college, and there were many mosquitoes in summer.

One day in summer, my roommate skipped class. I lit four plates of mosquito-repellent incense in the dormitory to catch mosquitoes.

In less than a quarter of an hour, the window was flooded by mosquitoes.

Because we know that mosquito-repellent incense can only make mosquitoes faint temporarily, we packed the fainted mosquitoes with matchboxes. Then at night, another roommate fell asleep, and he poured mosquitoes into his mosquito net weakly.

Now every time I think about it, I feel really sorry for him.