Anaandika - she writes should be good, why is it a failure?
He writes should be fine
In general, and in this example, how can you tell the difference between he and she? Both appear to use the Ana- preffix.
Generally, context. In this example, you can't. Both should be accepted. If you put "she writes" and it wasn't accepted, report it next time you see it.
How does simple present tense differ from present continuous tense?
For one verb it accepts both as interchangeable, the next it only accepts one or the other
"He writes" is still not accepted.