by the killers whales, the whalers were able to make a successful kill.A. To help outB

发布时间：2020-08-16 17:00:35

     by the killers whales, the whalers were able to make a successful kill.
A. To help out
BHelped out
C. Helping
D. Being helped out

网友回答

A. To help out
B. Helped out
C. Helping
(答案→)D. Being helped out
解析：本题考查非谓语动词。being done 做原因状语，表被动和动作的同时进行，故选D。
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