Verified answer

2 верно

3 None of the teachers at our school let their students leave early. (Если после none нужно использовать существит., то добавляется предлог of)

4 I have got hardly any Facebook friends.

5 Several people I know are bored with Facebook.

6 They both are very lazy. (в сочетании с местоимениями both ставится после местоимения)

7 Neither of them works.