--Could you tell me whom the radia ____by?A,is invented B,was inwented

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--Couldyoutellmewhomtheradia____by?A,isinventedB,wasinwented--Couldyoutellmewhomtheradia____by?A,isi

--Could you tell me whom the radia ____by?A,is invented B,was inwented
--Could you tell me whom the radia ____by?
A,is invented B,was inwented

--Could you tell me whom the radia ____by?A,is invented B,was inwented
英语专业回答:A解析:could在这里不是can的过去式,而是表示征求!

A

答案是A

A...
事实用现在式。。

Could you tell me whom the radia ____by?
A)is invented