How do you spell "k.i.l.l.e.r"

Chem, math, social studies common test today.

At first I had more confidence in math then chem but now... opposite. Social studies... Shall not mention.

Jane ate 4 bowls of udon! Bez. Glutton x 123!

Tmr's papers : English (100mins), chinese and physics. Haven't study for physics yet so bb!