What ending do you use for leer in preterite ello/ella/usted form?
-io
-yo
-ieron
-yeron
What ending do you use for leer in preterite ellos/ellas/ustedes form?
The correct order for using a regular verb in preterite tense goes as follows: Start with an infinitive, Drop the -ar, -er, -ir ending, then add the correct preterite ending