Translation:Ik drink melk.
What I am seeing is
and Hij/Zij/Ze: Drinkt
you are correct
That's right! See here for the full conjugation table. In the present tense, drinken is a regular verb and is conjugated the same way as lopen.
Drink is for drink and drinkt is for drinks?
Almost correct, drinkt is also for you drink. All three plural forms of to drink (wij, jullie, zij) are drinken.
Why "ik drink de melk" is wrong?