Tamamdır aşağıdaki kod ile oldu..
<ul id="tab-posts"><?php $posts = get_posts("numberposts=10&cat=-2020&orderby=post_date&order=DESC"); foreach($posts as $post) : ?><li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li><?php endforeach; ?><br /></ul>