public function get_questions( $return = 'questions' ) {

		$query = new WP_Query(
			array(
				'meta_query'     => array(
					array(
						'key'   => '_llms_parent_id',
						'value' => $this->get_parent()->get( 'id' ),
					),
				),
				'order'          => 'ASC',
				'orderby'        => 'menu_order',
				'post_status'    => 'publish',
				'post_type'      => 'llms_question',
				'posts_per_page' => 500,
			)
		);

		if ( 'ids' === $return ) {
			$ret = wp_list_pluck( $query->posts, 'ID' );
		} elseif ( 'posts' === $return ) {
			$ret = $query->posts;
		} else {
			$ret = array();
			foreach ( $query->posts as $post ) {
				$ret[] = new LLMS_Question( $post );
			}
		}

		return apply_filters( 'llms_quiz_get_questions', $ret, $this, $return );

	}