Question

There is no greater love than ________ who devotes his whole life ________ 　mankind.

1. A.
   that of a man; to benefiting
2. B.
   a man; to benefiting
3. C.
   that of a man’s; benefits
4. D.
   a man’s love; in benefiting

Answer 1

A
根据固定搭配devote…to…中的to是介词，后面要接名词、代词或动名词，排除C和D；再根据比较对象应当是love与love相比，所以只有A正确，that在句中替代love。