By the end of 1976,many buildings ______ built in the city.选项:A)have been B) had been请问答案为什么选A?B为什么不对?

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Bytheendof1976,manybuildings______builtinthecity.选项:A)havebeenB)hadbeen请问答案为什么选A?B为什么不对?Bytheendof19

By the end of 1976,many buildings ______ built in the city.选项:A)have been B) had been请问答案为什么选A?B为什么不对?
By the end of 1976,many buildings ______ built in the city.
选项:A)have been B) had been
请问答案为什么选A?B为什么不对?

By the end of 1976,many buildings ______ built in the city.选项:A)have been B) had been请问答案为什么选A?B为什么不对?
对,答案错了,应该是选B

我也觉得是B……
能说出By the end of，应该都不是现在了
只能是过去完成

B
答案有问题吧
明显的过去完成时啊

如果现在是时间是1976年，选A是对的，否则要选B) had been

had been是过去完成时，表示去过什么地方,也是对过去已经做过的事的描述。I had been there.我去过那里。have/has been 是现在完成时，前者用于第一人称或复数（I或they等），后者用于第三人称单数（she或he或someone 等），he has been there.他去过那里（不管有没有回来）。...

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