Fill in the gap with necassary form of the wordExample: At school pupils obtain basic ... (to know) necessary for their further education.Answer: knowledge
The ... (to survive)of many animal species is now in doubt.

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

Fill in the gap with necassary form of the wordExample: At school pupils obtain basic ... (to know) necessary for their further education.Answer: knowledgeThe ... (to survive)of many animal species is now in doubt.