Fill in the gap with necassary form of the wordExample: At school pupils obtain basic ... (to know) necessary for their further education.Answer: knowledge
This book suggests that there have been 100 major ... (to discover) in the last 3.5 billion years.

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