Blue Ribbon ReadersThis is an American website created by Penn State's Outreach Service. It has lots of interactive activities that reinforce reading comprehension. The games automatically adjust levels based on correct answers, and passages have the option to be read aloud as well.
Storyline Online Reading aloud to children has been shown to improve reading, writing and communication skills, logical thinking and concentration, as well as inspire a lifelong love of reading. Each book includes supplemental curriculum developed by teachers, aiming to strengthen comprehension, and verbal and written skills.