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.
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Question: the dog chased the cat, which ran up a tree. it waited at the top.

Answer: it


Question: i was trying to open the lock with the key, but someone had filled the keyhole with chewing gum, and i couldn't get it in.

Answer: i, it


Question: adam can't leave work here until bob arrives to replace him. if bob had left home for work on time, he would be gone by this time.

Answer:
him, he, this