Indicate all the pronouns (they, them, you, he, his, her, you, it, etc.) present in the given sentence. If there are multiple such pronouns in a sentence, then list them in the order of their first appearance in the given sentence. If a pronoun appears multiple times in a sentence, list it only once.
One example: the user changed his password from grwqwu8jyc toÂ willow-towered canopy huntertropic wrestles as it was easy to remember.
Solution is here: his, it
Explanation: In this statement, 'it' is the pronoun used for password, and 'his' is used for the user.

Now, solve this: the drain is clogged with hair. it has to be removed.
Solution:
it