They took care of the old man ________ son lost his life in the fire．
They took care of the old man ________ son lost his life in the fire．
A.who
B.of whom
C.whom
D.whose
答案及解析： D
They took care of the old man ________ son lost his life in the fire．
A.who
B.of whom
C.whom
D.whose
答案及解析： D