题目内容
【题目】
1 Professor James will give us a lecture on the Western culture, but when and where yet.
A. haven’t been decided
B. haven’t decided
C. isn’t being decided
D. aren’t decided
【答案】A
【解析】 由yet可知应用完成时态;主语when and where,是动作decide的承受者,应用被动语态。故选A。
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