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

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

b

B. mind sb.doing sth.(介意某人做某事)是固定短语,spend ...(时间或金钱)(on) doing sth.也是固定用法。

B.
mind+doing.
spare time to中to是介词,+doing.

mind + doing
后面一个to是介词,所以也用doing