It is... НАСТОЯЩЕЕ
It will be...БУДУЩЕЕ
<span>It was...ПРОШЕДШЕЕ</span>
1) Are lots of my friends keen on reading books? - общий
2) What are lots of my friends keen on? - специальный
3) Are lots of my friends keen on reading books or on doing sports? - альтернативный
4) Lots of my friends are not keen on reading books, are they? - разделительный
5) Who is not keen on reading books? - к подлежащему