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外语
Professor Wang is going to give us a lecture on the history of American literature, but when and where ______ yet.
Professor Wang is going to give us a lecture on the history of American literature, but when and where ______ yet.
admin
2016-01-26
79
问题
Professor Wang is going to give us a lecture on the history of American literature, but when and where ______ yet.
选项
A、aren’t decided
B、hasn’t been decided
C、haven’t decided
D、haven’t been decided
答案
B
解析
句末的yet提示此处需要完成时态,且这里的时间和地点应视为一个整体,要用单数形式的完成时被动语态.故选B。
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0
专业英语四级
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