-The girls in blue are our new classmates.　-I know .A. theseB. soC. suchD. that

网友回答

A. these
B. so
C. such
(答案→)D. that
解析：此处为指代上句内容的用法， that用来指已说过的人和事。so常跟在某些词,如think, hope, believe, expect , imagine, suppose等之后,替代肯定结构。故答案为D符合。