题目内容
He has devoted his whole life to ________ mankind.
[ ]
A.
benefiting
B.
benefit
C.
have benefited
D.
be benefited
答案:A
练习册系列答案
相关题目
— Why does he walk like that? It seems that he has great difficulty in walking.
— Because he got ____ in an accident three years ago.
| A.damaged | B.wounded | C.injured | D.destroyed |