I think the end of friendship is because of changes in the friend's situation or himself, such as entering another school or changing another job, which will affect the friendship.
I think friendship ends because of a friend's situation or changes in itself, such as going to another school or changing another job, which can affect friendship.
I think the end of friendship is due to the change of friend's situation or self, such as entering another school or changing another job, which will affect friendship.<br>