单选题
There's a boy outside ______ is running across the road from that house.
A、
[A] which
B、
[B] who
C、
[C] that
【正确答案】
B
【答案解析】
[名师解析] 根据从句的谓语动词可知主句先行词为boy,而由于boy表示人,关系代词应用who指代boy,而不能用which或者that。所以选项A、C均不能选择,只有选项B符合题意,故选B。
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