1.Correct the mistakes Исправьте ошибки(они в каждом предложении)
We sang songs at 10 o,clock last Monday.
i was seeing him at 6 o ,clock yesterday.
Peggy wrote a story at 7 o, clock last night.
They were being an holiday when we called/

We were singing at 10 o,clock last Monday.
I saw him at 6 o ,clock yesterday.
Peggy was writting a story at 7 o, clock last night.
They were on holiday when we called.

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