Add word regular price and sale price before the prices.

Regular Price and Sale Price words are not showing on my product page. Can anyone help me show this words before the numbers

My site:

http://www.wod-fuel.com/product/wod-fuel/

I want to remove the word from. Then replace with the Regular Price and sale price

http://grab.by/sKYS you can also see here where I want to add the words.

Thanks,
Rich

http://wordpress.org/plugins/woocommerce/