问题
选择题
The four years, from 1860 to 1864 ___ Lincoln spent fighting for freedom of the slaves is the time ___ the American people will never forget.
A．when; when
B．which ; that
C．when; which
D．which; when
答案
答案：B
第一空填一个关系代词which, 在定语从句中作spent的宾语;第二空所填的that在定语从句中作forget的宾语.