难度:★ 考点:定语从句
1. - What are you looking for ?
- I'm looking for the pen________my father gave me last week.
A- who B. which C, whose D. whom
2_ --- Do you know the girl_____ is helping the old woman.
-Oh, that's my sister,
A. whom B. whose C. who D. where
3. Steve Jobs is one of the persons founded Apple Computer Company. His death marked the end of an era (时代).
A. who B. whom C. which D. /