Interestingly, antonym of any word is the opposite annotation for the same.
Here, when we deeply analyze the first group, "approve and disapprove", we notice the use of prefix- "dis-" before the main word to alter the meaning. However, if we had to use a simple antonym in the first group, we could have quote "refuse" in the place of "disapprove."
Therefore, through my understanding, I would suggest that the correct pair for the second word, "praise", would be "dispraise" instead of "criticize".