问题
选择题
It’s more than half a century _____ my grandfather joined the Party and became a servant to the people.
A．when
B．that
C．since
D．while
答案
答案：C
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It’s more than half a century _____ my grandfather joined the Party and became a servant to the people.
A．when
B．that
C．since
D．while
答案：C