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

问题补充：

I soon found that the work I was doing had already been done by someone else.，I was wasting my time.

A. In other words

B. In a word

C. First of all

D. Believe it or not

答案：

(答案→)A. In other words

B. In a word

C. First of all

D. Believe it or not

解析：

试题分析:考查固定短语。A换句话说；B总之；C首先；D信不信由你。根据句意可知前句话和后句话表达了相同的意思，所以答案选A。句意：我很快发现我在做的工作已经被别人做过了，换句话说，我在浪费时间。