问题补充：
to looking after her sick father for 2 years ,she badly needed a holiday.
A. Devoting
B. Having devoting
C. Having been devoted
D. Devoting herself
答案：
A. Devoting
B. Having devoting
(答案→)C. Having been devoted
D. Devoting herself
解析：devote(vt.) one’s life/oneself to sth.=be devoted to (系表结构 )
