Hi,<br/><br/>1. a) It's no fun to clean <b>a</b> restroom.<br/>1. b) It's no fun to clean <b>the</b> restroom.<br/><br/>2. a) This product is to be used in <b>a</b> kitchen.<br/>2. b) This product is to be used in <b>the</b> kitchen.<br/><br/>Either article is correct in these examples, right? "A" implies any kitchen/restroom, "b" implies the one that's there (for example, in your home).