19. Is this the very factory he visited last month?A. whichB. thatC. whereD. in which

网友回答

A. which
B. that
C. where
D. in which
解析：先行词被序数词、形容词的最高级及only, any, few,little, no, all, very,last等修饰时,关系代词常用that不用which。