Wait...WHAT?  

Royce Winnick's 5-year-old daughter brought home a worksheet, to reinforce learning the letter "T".  Sounds simple enough, right?  Well not so fast.

Now the first three are simple enough.  Tub, ten, top....but what in the world is that fourth one?

Royce says:

"I posted the homework because we honestly could not figure out the answer."  

 Answers poured in, including: two-by-two, twins, and twabbits but when the girl's worksheet came back, the correct response was "vet." Winnick's daughter had ultimately settled on "pet," which the teacher accepted. "How is a 5-year-old supposed to know that?" Winnick said. [Source]

Vet?  There is no veterinarian in the picture!?!?!?!?!  Apparently the teacher says she will be writing to the publisher of the activity book about some of the pictures.