are you using text+display or text only?Hey, you have to review your theme + make sure you have a focused content on your pages, i.e. do not put cocktails, stake and vegetarian recipes on the same page. Also it would help if you reach out to adwords keyword tool and optimize your content over high paying words & phrases.
Answering on your original question: 1000 impressions 60-80 clicks - > 6-8% CTR