The education reform plan took one year and nine months to draw up, public opinions were called for,
A. to which
B. during which
C. from which
D. from whom
网友回答
A. to which
(答案→)B. during which
C. from which
D. from whom
解析：考查定语从句。句中先行词为one year and nine months，故用during which，指代在此期间，故选B。