<?php if(in_category('5')):include(TEMPLATEPATH. '/single-news.php');
elseif(in_category('4')):include(TEMPLATEPATH. '/single-news.php');
elseif(in_category('6')):include(TEMPLATEPATH. '/single-recruit.php');
elseif(in_category('7')):include(TEMPLATEPATH. '/single-other.php');
?>

<?php else: ?>

<p>

カテゴリー1と2以外のときの表示内容をここに。

</p>

<?php endif; ?>