Why does tom riddle(Voldemort) ask if professor merrythought is retiring?

[therestiformbody]

I don't get it.

 

[IanBeck]

Because he wants to kill her because he hates the subject she teaches, which is muggle studies.
The reason for this is because he hates muggles, because he is a descedant of salazar slytherin

 

[itsao]

.
I don't get it.
I do I got it last night
I hope I get it again tonight
Now do you get it