juodikis

OK, I figured out. Put this into functions.php

function my_custom_excerpt($text) {
	global $post;
	if ( '' == $text ) {
		$text = get_the_content('');
		$text = apply_filters('the_content', $text);
		$text = str_replace('\]\]\>', ']]>', $text);
		$fulltext = str_replace('\]\]\>', ']]>', $text);
		$text = strip_tags($text, '<p>');
		$excerpt_length = 100;
		$words = explode(' ', $text, $excerpt_length + 1);
		if (count($words) > $excerpt_length) {
			array_pop($words);
			array_push($words, '... <a href="'. esc_url( get_permalink() ) . '">Read more »</a>');
			$text = implode(' ', $words);
		}
		else {
			$text = $fulltext;
		}
	}
	return $text;
}
remove_filter('get_the_excerpt', 'wp_trim_excerpt');
add_filter('get_the_excerpt', 'my_custom_excerpt');

My functions.php you can see here