I have a Nikon D7000, bought newly? It's only body?

I need a few Lens recommendations, becoz i have around $700 and i need a quality good lens for low-light photography and all-use rounded lens

Added (1). Thank you to Everyone, every each one of the answers were helful, but i can only choose one as a best answer ^^

If you want to go the really high end route, get a 50mm f1.4. Otherwise get a zoom but I can't recommend no pro lenses because I don't know anything about them. You have a very good camera. If you start to buy high quality lenses they will last you a very long time and you will get great images. Lenses are extremely important.

Actually the kit lens at the discounted price you get it at when bought with the camera is a very useful lens to have. 18 - 55mm is probably the most useful range for general use.

You may want to get a wider aperture version such as these Sigma ones. Don't discount Sigma they are every bit as good as Nikon. Even if I 'pixel peep' I can't see any difference in IQ.

This is the constant f2.8 version

http://www.srsmicrosystems.co.uk/4937/Sigma-17-50mm-F2-8-EX-DC-OS-HSM-Lens---Nikon-Fit.html

Or one with a varying aperture f2.8 - f4 but wider range 17 - 70mm

http://www.srsmicrosystems.co.uk/4828/Sigma-17-70mm-F2-8-4-DC-Macro-OS-HSM-Lens---Nikon-Fit.html

This last one is the one I use most, I own them both and IQ is very good.

Here are the Nikon equivalents

http://www.srsmicrosystems.co.uk/267/Nikon-17-55mm-F2-8G-AF-S-DX-IF-ED-Nikkor-Lens.html

http://www.srsmicrosystems.co.uk/318/Nikon-16-85mm-F3-5-5-6G-AF-S-DX-ED-VR-Nikkor-Lens.html

The best image quality is with primes (lenses with no zoom) the 50mm f1.4 has a large aperture is good in low light, but is limited when used on a D7000 ( a superb camera BTW) due to the crop factor basically to portrait use, it's not a 'walking around lens'. There should be one in every photographers bag - eventually.

Nikon have a good range of them, 50mm are the easiest lens to make and are usually the widest aperture at a reasonable price.

You may prefer the wide aperture 35mm f1.8 versions designed for the smaller sensor

http://www.srsmicrosystems.co.uk/2526/Nikon-35mm-F1-8G-AF-S-DX-Nikkor-Lens.html

35mm has the same field of view as a 50mm does on a full frame sensor.

Avoid wide range zooms, all lenses have compromises in their design, wide range zooms are the most compromised of all, none of them perform well.

Rick is right, go for quality. As to what lens it really depends on the style of photography you are look at. Landscape, wildlife maybe a bit of both.

Lenses are expensive and $700 won't get you loads of top quality lenses. So choose one or two lenses and buy the best you can afford. Learn to use them to their extremes, only then look to upgrade.
I teach photography and so often I see students buy a really expensive lens, but they never get to appreciate it because it if beyond their skill level.

All the best