In the following items, each passage consists of six sentences. The first sentence (S1) and the final sentence (S6) are given. The middle four sentences in each have been removed and jumbled up. These are labelled P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark accordingly on the Answer Sheet. 

S1: Todd borrowed this dollar last year on the 8th of April. 
P: He needed a dollar to pay his taxi and I lent it to him. 
Q: He merely said, 'Let me have a dollar, will you'! 
R: It happened quite simply and naturally. 
S:  I hardly realised it till it was all over. 
S6: And I said, 'certainly'.