What pronouns always takes a singular form of verb?

The pronoun that always takes a singular form of the verb is "I".

Here's why:

* Subject-verb agreement: In English, verbs must agree with their subjects in number (singular or plural).

* "I" is always singular: The pronoun "I" refers to a single person, making it always singular.

Example:

* Correct: "I am going to the store." ("I" is singular, so the verb "am" is singular)

* Incorrect: "I are going to the store." (This is incorrect because the verb "are" is plural)