【单选题】

Everyone needs friends. We all like to (41) close to someone. (42) is nice to have a friend to talk, laugh, and do things with (43) , sometimes we need to be alone. We don’t always want people (44) .But we would feel lonely if we never have a frienD、

No two people are just the same. Friends (45) don’t get on well. That doesn’t mean they no longer like each other. Most of the time they will (46) and become friends again.
Sometimes friends move away. Then we feel very (47) . We miss them very much, but we can call them and write to them. It could be that we could never see them again.And we can make new friends. It is (48) to find out how much we like new people when we get to know them.
There’s more good news for people who have friends. They live longer than people who (49) . Why It could be that they are happier.Being happy helps you stay well. Or it could be just knowing that someone cares. (50) someone cares about you, you take better care of yourself.
A．Because
B．If
C．But