Hi,<br/><br/>Can I use English articles like this?<br/><br/>1. What do you like to have between your work breaks? <u><b>A Sneaker</b></u> (or Sneakers)<br/><br/>(<i>Sneaker</i> seems to be a brand name of a product.)<br/><br/>2. What sound does a cow make? <u><b>a Moo</b></u> (a 'moo' sound??)