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.