单选题 There were dirty marks on her trousers ______ she had wiped her hands.
  • [A] where
  • [B] which
  • [C] when
  • [D] that


【正确答案】 A
【答案解析】on her trousers在定语从句she had wiped her hands中作地点状语，所以选择关系副词 where。答案为A。