She didn't mind ___ all her spare time to ___ the sick old man.
问题描述:
She didn't mind ___ all her spare time to ___ the sick old man.
A.to devote;help B.devoting;helping
C.devoting;help D.to devote;helping
请问为什么
答
B.
mind+doing.
spare time to中to是介词,+doing.