The answer is "when the surrounding words are unfamiliar".
Wouldn't the subject be I because it is about you?
Answer:
hihwh wjvvwnnbshuhbe gwhw
He worries<span> that Banquo </span>will<span> be suspicious of Duncan's murder so he decides to kill Banquo and his son Fleance in order to ensure that none of Banquo's people take the throne after him. He doesn't want people to know that hes guilty of killing the king.</span>