Red underlines

Why do red lines appear under words, even when the program says my answer is correct?

8/29/2013, 3:20:01 AM


Could it be that your browser sees them as misspelt?

8/29/2013, 3:26:55 AM

Gracias Clyde. Maybe that is it. (In fact, it just underlined "Gracias". That must be it.

8/29/2013, 12:15:15 PM
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