1)Have you ever tried chinese food.
2)He has been to China.
3)She has been to london since she finished the university.
4)They have lived in cario since 199.
5)How long has jack lived in London.
6)Mary has met him before.
1. each other
2 themselves
3 each other
4 each other
5 themselves
6 each other
7 ourselves
8 each other
9 ourselves to each other
Ответ:правильно написано на фото
A lot - наречие, а a lot of - предлог.