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519.1 lead, led
Lead (lēd) is a verb meaning “to guide.” The past tense of the verb is led. Lead (lĕd) is also a noun referring to the metal.
Mr. Thielen has led the campaign to get lead out of pipes in the city.
519.2 learn, teach
Learn means “to get information”; teach means “to give information.”
What I learn today, I will teach tomorrow.
519.3 leave, let
Leave means “to go away or to allow something to remain behind.” Let means “to permit.”
The principal let the students leave school early.