Recently I came upon these sentences in one of my exercises, and I was wondering whether time "continuity" or chronology was disrupted here.
Task: "There are mistakes in eight of these sentences. Correct the sentences where necessary. Write 'Ok' if the sentences is already correct".
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We can't remember where did we leave our car.
My version: We can't remember where we have left our car.
Author's version: We can't remember where we left our car.
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Now I know why didn't you tell me what you were buying!
My version: Now I know why you haven't told me what you were buying!
Author's version: Now I know why you didn't tell me what you were buying!
Imprimis, I am not a native speaker, however, I have been told that you can't mix up certain tenses, for instance, Present Simple + Past Simple etc.
