Преобразуйте предложения, используя герундиальные обороты.
Например: We heard that the plan had been made up last week. — We heard of the plan having been made up last week.
Our director told that the principal engineer would be sent on business to the USA.
К сожалению, у нас пока нет статистики ответов на данный вопрос,
но мы работаем над этим.