Let's learn one more important pronoun:

toks (such, masculine)
tokia (such, feminine)
tokie (such, plural masculine)
tokios (such, plural feminine)

Compare the endings of this pronoun to the adjective "žalias" (green):

Mums reikia tokių mokinių. We need such pupils.

As you see, toks is translated as "such", but sometimes you need to translate it as "so":

Kodėl žolė tokia žalia? Why is the grass so green?
Šie mokiniai yra tokie geri! These pupils are so good!

Toks lėtas autobusas man nepatinka. I don't like such a slow bus.
Ši mašina yra tokia lėta! This car is so slow!
Gerai, kad tos moterys yra tokios gražios. It's good that those women are so beautiful.
Ar jie yra tokie seni, kad negali paeiti? Are they so old that they cannot walk?
Toks tokiam patinka. Such appeals to such.