Question

The education reform plan took one year and nine months to draw up, ______ public opinions were called for.

1. A.
   to which
2. B.
   during which
3. C.
   from which
4. D.
   from whom

Answer 1

B
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。