To hear your text or assignment read aloud, click on the "Read Aloud" button in the top-right corner or your screen above the questions box (on mobile, it will be at the bottom, above the questions bar).
Once Read Aloud is opened, you can click play to hear the story, poem, or article read aloud from the beginning. If you pause, stop, or leave the page at any time, it will save your place. When you return and press play again, it will pick up read aloud where you left off.
You can also click the speaker icon next to any paragraph, line, or question in the questions panel to hear that particular section read aloud.