the time he has devoted in the past ten years ___the disabled is now considered ___of great value.
问题描述:
the time he has devoted in the past ten years ___the disabled is now considered ___of great value.
A to help ,being B to helping ,to be C help .to be ,D helping ,being
答
B,devote to doing 所以选to helping
be considered to be 意思是被认为是.