A． It is good to have a nice neighbor as long as possible, and it is bad to get rid of a nasty neighbor.
B． You never get tired of a good book; while you should get rid of a bad one the earlier the better.
C． It is good to have a nice neighbor as long as possible, and a bad neighbor as short as possible.
D． A good book is a good neighbor who will last long, and a bad one is just like a bad neighbor who would like to get rid of you.