The professor said he could talk on interested the audience.A. any topicB. which topicC.

发布时间：2020-08-14 23:07:25

The professor said he could talk on      interested the audience.A. any topicB. which topicC. whichever topicD. the topic he thought it

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whichever已失去疑问含义，等于 anything that，表示强调；而 which topic中 which保留疑问含义，译成哪一个题目，不符合句义。而A和D中缺少连词。
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