I sharpened my skills under the mentorship of my coach.
You need a noun to complete this sentence, and mentorship is the only noun here - the rest of the words are adjectives.
In Act III, Scene<span> VI, </span>Lennox<span> ponders over </span>Macbeth's<span> behavior: “Things have been strangely borne.” He first points out how </span>Macbeth<span> cared for King Duncan, yet he is dead. ... This all </span>foreshadows Macbeth's<span> downfall at the hands of an army and Macduff himself.</span>