你好、最佳答案：Last week at this time we are preparing for the examination.望采纳、谢谢你的支持、祝福你永远永远幸福、开心每一天 ∩_∩
We were preparing for the exam at this moment last week.
就是We were preparing for exam this time last week
We were preparing for the exam at this time last week.
This time last week we were readying for our exmans.
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