4 ( )内の適切なものに○をつけなさい。
A new series of novels (1)(which, which are set in the 15th century, has made
people (2) (who who ) would not usually read about history become interested in
*Medieval Britain. That was a time (3)(which/ when there were constant battles for
time
power. The reason (((why/how) the books are so popular is that the author (5) who
who used to be a history teacher, shows us how people lived then, by bringing to life
the characters of that era, even those about (6) who / whom/) little is actually known.