Quiz question

Hi,

I'm new here and haven't really checked if this question has been put to you yet, but even so...
In this quiz:
Look, See & Watch - Online Language Quiz - UsingEnglish.com

Question #5:
Q5 - I spent the evening ____ TV.
seeing
looking at

I don't see a correct answer here at all, but maybe I'm mistaking?
The site says the correct answer is "seeing", but I don't see myself "seeing TV"

Wazzup?

Thanks- I will sort it out.

Done already, great!
I was starting to doubt my knowledge of the English language, but this reassures me.....