The following passage consists of six sentences. The first and the sixth sentence (as S1 and S6) are given in the beginning. The middle four sentences in each have been removed and jumbled up. These are labelled as P, Q, R and S. You are required to find out the proper sequence of the four sentences S1: Make sure your glasses fit well. S6: Keep the glasses clean and a soft cloth is the best for cleaning. P: Take your glasses for adjustments to the place you bought them. Q: Keep your glasses in a case when you are not wearing them. R: The earpieces should be at eye level and don't try to adjust the earpieces yourselves. S: This will prevent scratches.