public function process_fib($xml, &$questions) {
        if ($this->getpath($xml, array('POOL', '#', 'QUESTION_FILLINBLANK'), false, false)) {
            $fibquestions = $this->getpath($xml,
                    array('POOL', '#', 'QUESTION_FILLINBLANK'), false, false);
        } else {
            return;
        }

        foreach ($fibquestions as $thisquestion) {

            $question = $this->process_common($thisquestion);

            $question->qtype = 'shortanswer';
            $question->usecase = 0; // Ignore case.

            $correctfeedback = $this->getpath($thisquestion,
                    array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_CORRECT', 0, '#'),
                    '', true);
            $incorrectfeedback = $this->getpath($thisquestion,
                    array('#', 'GRADABLE', 0, '#', 'FEEDBACK_WHEN_INCORRECT', 0, '#'),
                    '', true);
            $answers = $this->getpath($thisquestion, array('#', 'ANSWER'), false, false);
            foreach ($answers as $answer) {
                $question->answer[] = $this->getpath($answer,
                        array('#', 'TEXT', 0, '#'), '', true);
                $question->fraction[] = 1;
                $question->feedback[] = $this->cleaned_text_field($correctfeedback);
            }
            $question->answer[] = '*';
            $question->fraction[] = 0;
            $question->feedback[] = $this->cleaned_text_field($incorrectfeedback);

            $questions[] = $question;
        }
    }