【題目】—Could you say something about Turkey’s downing of the Russian fighter jet?

—Sorry. It ______ by a group of experts and will be made clear the moment they get the answer.

A. has been investigated B. is being investigated

C. was investigated D. was being investigated

【答案】B

【解析】

試題分析：考查動(dòng)詞時(shí)態(tài)。上句：你能說一些關(guān)于土耳其擊落俄羅斯戰(zhàn)機(jī)的情況嗎？下句：對(duì)不起。這件事正在被一個(gè)調(diào)查組調(diào)查。故選B。

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