It all depends what you are interested in photographing and thus what type of lens you are interested in.
There are a few zooms in that price range, example 18-55 Nikon, 18-70 Nikon, 18-105 Nikon. These kit zooms are better than they get credit for. Longer zooms are also available, ex: 55-200, 55-300 from Nikon. These are not the top of the line pro models with constant apertures, but for the money, they are pretty good.
Nikon offers quite a few primes in your price range as well. 28 2.8, 35 1.8, 35 2.0, 40 2.8, 50 1.4, and the ever popular 50 1.8.
Throw in third party and second hand offerings and the choices become practically unlimited. Your D7000 can autofocus with nearly every auto-focus ever made for nikon (except for a few very rare lenses made for F3). Your D7000 can also meter with nearly all Ai and Ai-s ever made.
Good luck in your search. Give more details of your requirements and folks will be able to give you more specific recommendations. No matter what is said though, the final choice is yours and yours alone, and that is as it should be.