read-
Am I reading?
Are you reading?
Is she/he/it reading?
Are we reading?
Are you reading?
Are they reading?
sleep-
Am I sleeping?
Are you sleeping?
Is she/he/it sleeping?
Are we sleeping?
Are you sleeping?
Are they sleeping?
cook-
Am I cooking?
Are you cooking?
Is she/he/it cooking?
Are we cooking?
Are you cooking?
Are they cooking?