Ordering Of Words

When he P : did not know Q : he was nervous and R : heard the hue and cry at midnight S : what to do The Proper sequence should be:

It has been established that P : Einstein was Q : although a great scientist R : weak in arithmetic S : right from his school days The Proper sequence should be:

Then P : it struck me Q : of course R : suitable it was S : how eminently The Proper sequence should be:

I read an advertisement that said P : posh, air-conditioned Q : gentleman of taste R : are available for S : fully furnished rooms The Proper sequence should be:

Since the beginning of history P : have managed to catch Q : the Eskimos and Red Indians R : by a very difficult method S : a few specimens of this aquatic animal The Proper sequence should be: