1. (2020·松北模拟) Each country has different rules about social situations. ________are what we can do.

①In Japan, we are supposed to kiss when we see each other.

②In Switzerland, we never visit a friend without calling first.

③In India, we can eat with our hands.

④In Mexico, we should bow when meeting for the first time

⑤In Colombia, it's OK if we arrive a bit late when we are invited to have dinner in a friend's house.