Ryan (teach) us about some memorable moments in school history
what is the past form for the irregular verb "teach"? 1.teached 2.taught 3.teaches 4.teaching

The answer to the question above is option 2. The past form of the word "teach" is TAUGHT. The verb "teach" is an example of an irregular verb since the past form does not take the -ed or -d form. So the best verb that completes the sentence is the word TAUGHT. Hope this answer helps.