题目内容
【题目】About 10 million dolphins are said ________ in the past 15 years.
A. to have killed B. to kill
C. to have been killed D. to be killed
【答案】C
【解析】
试题分析:考查固定句型,句意:据说大约有一千万头海豚在过去的15年被杀死,be said to have done据说已经。。,故选C项。
考点 : 考查固定句型
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