Look at this pair of sentences. Choose from the phrases to complete sentence b with the same meaning as sentence a.
a). This is definitely one of the classic designs of the last century.
b).This shouldcan'tmightmust be one of the classic designs of the last century.
К сожалению, у нас пока нет статистики ответов на данный вопрос,
но мы работаем над этим.