问题
选择题
It was my sister ________ first had the idea to cycle along the entire Mekong River.
A．who
B．whom
C．/
D．which
答案
答案：A
修饰名词sister是一个定语从句，先行词表示人，关系词在从句中作主语可用who，故本题选A。
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It was my sister ________ first had the idea to cycle along the entire Mekong River.
A．who
B．whom
C．/
D．which
答案：A
修饰名词sister是一个定语从句，先行词表示人，关系词在从句中作主语可用who，故本题选A。