The girls ___ are playing games are my sisters.
A: whom
B: which
C: whose
D: who
                    A: whom
B: which
C: whose
D: who
举一反三
- He has two sisters, ______ are working in the city. A: which B: who C: whose D: whom
 - The woman _______ bought a doll for me is my aunt. A: who B: whose C: whom D: which
 - I am talking to my teacher. _______ are you talking to? A: whose B: who C: whom D: which
 - Tony is a man ( ) hobby is playing basketball. A: who B: whose C: that D: whom
 - My colleague _____ lacks this knowledge can’t work better with the patients. A: whom B: whose C: which D: who
 
