为什么选B不选AI'm sure at this time of that day they▁▁into the har

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/23 10:20:06

为什么选B不选A
I'm sure at this time of that day they▁▁into the harbour.
A.were proceeding B.has proceeded
C.will proceed D.be proceeding

答案肯定是错误的.本题只能选择A.
分析句子的意思是我敢断定,在那天的此时此刻,他们----------港口.
时间状语 “那天的此时”对句子的时态做出了界定,即只能是过去进行时.
再假设一下,如果B选项是had proceeded也还合理, 那时已经如何了,用过去完成时.可惜不是.
供参考.

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