A-A+
(A number) of foreign visitors (were taken) to
问题详情
(A number) of foreign visitors (were taken) to the industrial exhibition (which) they (saw) many new products.
A．A number
B．were taken
C．which
D．saw
参考答案
正确答案：C
解析：根据句意，定语从句中不是缺少宾语，而是缺少表示地点的状语，所以引导词应该是where，即先行词exhibition在后面的定语从句中作地点状语。
