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求助!!
Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in various industries.
(A) fatigue among shift workers, and have raised
(B) fatigue among shift workers, and raised
(C) and fatigue among shift workers while raising
(D) lowered fatigue among shift workers, and raised
(E) and fatigue among shift workers was lowered while raising
如果a選項改成 " and fatigue among shift workers, and have raised" or "and "fatigue among shift workers and have raised" 會是對的嗎? 這裡需要逗號嗎?
thank you
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