Question: during his last year [at the university of pennsylvania] adrain had serious problems with discipline in his classes.
Answer: --> During his last year [at the University of Pennsylvania] Adrain had serious problems with discipline in his classes.

Question: saturday 10 february, 2018 61832970 requests since tuesday 16 december, 2003
Answer: --> Saturday 10 February, 2018 61832970 requests since Tuesday 16 December, 2003

Question: when dealing with animals, leeches can sometimes be a bit choosy. it is therefore advisable to hold ready about twice as many leeches as needed.
Answer:
--> When dealing with animals, leeches can sometimes be a bit choosy. It is therefore advisable to hold ready about twice as many leeches as needed.