you tell me______at that time,中间加的是过去式还是现在式?》A what they were doing B what they are doing

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you tell me______at that time,中间加的是过去式还是现在式?》A what they were doing B what they are doing

you tell me______at that time,中间加的是过去式还是现在式?》A what they were doing B what they are doing
you tell me______at that time,中间加的是过去式还是现在式?》
A what they were doing B what they are doing

you tell me______at that time,中间加的是过去式还是现在式?》A what they were doing B what they are doing
选A 这里是 过去进行时 表示在过去的某个时间点正在发生的事情 翻译:你能告诉我在那时他们正在干什么?

过去式 at that time翻译成“在那个时间”,表示一个已经过去的时间 你能告诉我那个时候他们在干嘛么?