What the easiest way to remove chalk from a cotton sweatshirt?

I wore my sisters sweatshirt today. I accidently got chalk on it. she will be mad if she sees it because she will know I wore it.. heh heh so I don't want to ruin it. any help or suggestions?? please? thanks c;
Asked Mar 27, 2014
Try dabbing it with some water on a towel
Answered Mar 30, 2014
Help pleasehttp://www.ehelp.com/questions/10497482/please-help-me-im-so-stressed
Answered Nov 30, 2015
Wash the cotton sweatshirt in cold water or use soap for better cleaning. No technology or chemical agent are required. http://www.officecleaning.irish
Answered Feb 10, 2016

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.