the reason for not Approving would be told you.
Before you submit, please review the submission guidelines carefully and compare your work with other Stock inventory. To be accepted, your work should be as good or better than what's already represented in your keyword category.
Hope that helps.
Did you get the rejection due to quality issues?
The quality issues, in this case, are exposure and focus. The exposure could be better, the lighting isn't that good; it's rather uneven. There are shadows on your white background. It seems you used a white piece of paper as a background. The focus on pic 026 could be better. These are some of the reasons that the photos got rejected.
Noise due to high ISO. You need to use a tripod for these kinds of pictures, and you will need proper lightning. With a tripod, there won't be a need for a high ISO. Proper lighting will ensure for correct shadows. A reflector could be enough for this picture.
You will need to clean up your “floor” before or after the picture… and probably twice, physically before and digitally after…
9883: Same remarks. In addition, the coffee on the right lacks crema. That would make the picture more interesting.
026: Your picture is underexposed as shown on the histogram.
I agree with @ricky336 that the focus is bad. It's too narrow, and even what is in focus seems to slightly unsharp.