S1: Sometimes we have to put up with something irksome or unpleasant. S6: But we find ourselves getting accustomed to it in due course of time. P: Suppose we shift into a house near a factory which keeps going all day. Q: As time goes by, we are able to adapt ourselves to it so that it becomes a part of our life. R: Thus, we can get used to anything. S: At first, the noise of the machinery makes it impossible for us to sleep at night. The correct sequence should be: