<!DOCTYPE html> <html> <body> <p>Choose the course you would like to teach.</p> <select name="Subjects"> <optgroup label="Chemistry"> <option value="1"> Organic chemistry <option value="2"> Inorganic chemisry <option value="3"> Applied chemistry </optgroup> <optgroup label="Mathematics"> <option value="1"> Sat1 <option value="2"> Calculus2 <option value="3"> Linear Algebra </optgroup> </select> </body> </html>
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