Укажите верный вариант :
A. By 9 oclock yesterday I had written all my letters.
Б. By 9 oclock yesterday I have written all my letters.
В. By 9 oclock yesterday I was written all my letters.
Г. By 9 oclock yesterday I written all my letters.
Тут вообще всё не правильно) но ответ а
нужно как бы так: i had written all my letters be 9 oclock yesterday
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