英语难题求解答!Bob,who＿on his food ,looked up at the mention of the
英语难题求解答!
Bob,who＿on his food ,looked up at the mention of the word cash.A∶has been concentrating B∶has concentrated C∶had been concentrating D∶had concentrated 请帮我逐一分析一下!
Bob,who＿on his food ,looked up at the mention of the word cash.A∶has been concentrating B∶has concentrated C∶had been concentrating D∶had concentrated 请帮我逐一分析一下!
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选C
根据上下文,句子意思是：bob在抬起头来之前,一直是把注意力集中在他的食物上.然而抬头的动作looked up是过去式,因此之前的状态应该用过去完成进行时.
A,B 时态不对,而D根据上下文应该用完成进行时.
有问题请追加~
根据上下文,句子意思是：bob在抬起头来之前,一直是把注意力集中在他的食物上.然而抬头的动作looked up是过去式,因此之前的状态应该用过去完成进行时.
A,B 时态不对,而D根据上下文应该用完成进行时.
有问题请追加~
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