Simple Past of the verb 'to ask' (regular)
asked
Simple Past of the verb 'to write' (irregular)
wrote
Simple Past of the verb 'to read' (irregular)
read
Simple Past of the verb 'to listen' (regular)
listened
Simple Past of the verb 'to complete' (regular)
completed
Simple Past of the verb 'to teach' (irregular)
taught
Simple Past of the verb 'to learn' (regular)
learned
Simple Past of the verb 'to study' (regular)
studied
Simple Past of the verb 'to discuss' (regular)
discussed
Simple Past of the verb 'to understand' (irregular)
understood