Look at this pair of sentences. Choose from the phrases to complete sentence b with the same meaning as sentence a.
a). She can't be in the office. No-one has seen her.
b). It's not possiblemightmustcertain that she's in the office.

К сожалению, у нас пока нет статистики ответов на данный вопрос, но мы работаем над этим.