I am in grade 10. Today I had exam which my teacher gave by way of form in assignment. After typing all the answers accidently I pressed back button. Which took me to due assignment page. When I reopened the form in my assignment I found that everything that I had typed earlier was gone. So I had to retype everything all over again. What could be the remidy for this, so next time if something like this happens the answers do not vanish.