.I soon found that the work I was doing had already been done by someone else - , I was wa

.
I soon found that the work I was doing had already been done by someone else - , I was wasting my time.
A. in a word
B. in all
C. in other words
D. in words

A. in a wordB. in all(答案→)C. in other wordsD. in words解析：可联系答.案.网客服索取。

哦，回答的不错