<?php global $post;
$args = array('category' => 17);
$custom_posts = get_posts($args);
foreach($custom_posts as $post) : setup_postdata($post);
...
endforeach;
?>

<?php global $post;
    $args = array('category' => 17);
    $custom_posts = get_posts($args);
    foreach($custom_posts as $post) : setup_postdata($post);
    <div class="divA">
    </div>
    <div class="divB">
    </div>
    endforeach;
    ?>

<div class="divA">
Teste 1
</div>
<div class="divB">
Teste 2
</div>
<div class="divA">
Teste 3
</div>
<div class="divB">
Teste 4
</div>