The volunteers will visit the primary school next Monday , all the students are children of migrant workers,
A. which
B. who
C. when
D. where
网友回答
A. which
B. who
C. when
(答案→)D. where
解析：句意：志愿者下个星期一将去参观小学，那里所有的学生都是农民工的孩子。这里是定语从句，先行词是the primary school，定语从句中不缺主宾表，缺少的是地点状语，用where引导定语从句，选D。