首页 › 答案 › 题库 › 远程教育 › 国家开放大学

The time he has devoted ()the disabled is now considered ()of great value.

The time he has devoted ()the disabled is now considered ()of great value.
A.to help、being
B.to helping、to be
C.help、 to be
D.helping、 being
正确答案:B