For the blank, choose the correct relative pronoun from the italicized pair and put the words in parentheses in the correct order.

1		The 1950s were a time (when / where calls house made doctors still). The 1950s were a time .
2		There is great progress in the medical field, (when / where discoveries made are day every). There is great progress in the medical field, .
3		In the last century, many scientists lived in Europe, (when / where medical were great discoveries made). In the last century, many scientists lived in Europe, .
4		Medicine was very different one hundred years ago, (when / where had doctors medicines to fight few disease). Medicine was very different one hundred years ago, .
5		We are now in an age (when / where very is specialized medicine). We are now in an age .
6		An intensive care unit is a place (when / where critically ill patients for cared are). An intensive care unit is a place .