do you have any work to do?if any,i'll be of ——————do you have any work to do?if any,i'll be of ______A:helpfulB:greatfulC:helpD:helplessAB直接可以排除,我查了一下D选项的意思,词性是形容词好像也可以排除

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do you have any work to do?if any,i'll be of ——————do you have any work to do?if any,i'll be of ______A:helpfulB:greatfulC:helpD:helplessAB直接可以排除,我查了一下D选项的意思,词性是形容词好像也可以排除
do you have any work to do?if any,i'll be of ——————
do you have any work to do?if any,i'll be of ______
A:helpful
B:greatful
C:help
D:helpless
AB直接可以排除,我查了一下D选项的意思,词性是形容词好像也可以排除掉,但是句意选C不对诶,

do you have any work to do?if any,i'll be of ——————do you have any work to do?if any,i'll be of ______A:helpfulB:greatfulC:helpD:helplessAB直接可以排除,我查了一下D选项的意思,词性是形容词好像也可以排除
C是对的啊
of help = helpful
你有事做吗?如果有,我可以帮助一下.

be of +抽象名词 =相应的形容词 这里be of help +helpful