问题
选择题
He met Rachel at her college graduation ceremony in 2008, ________ he was later to marry.
A．which
B．when
C．where
D．whom
答案
答案：D
D 考察定语从句。Whom引导非限制性定语从句，在从句中作为Marry的宾语，修饰先行词Rachel。故D正确。
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