0 01blockquote 01cite 10Yoong Liat12cite 12br 10 10Jack and Peter mopped the floor. 12br 12br 10I think the grammar is correct and I only see one mistake: 11i 10know12i 10. 22blockquote 22br 12br 11i 10Was12i 10 cannot be used here, as you've already used 11i 10did12i 10, which is the correct word.
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01cite10Yoong Liat12cite12br
10 10Jack and Peter mopped the floor. Jack was so engrossed in cleaning the floor that he did 11b10know12b10 realise that he had kicked the pail of water.12br
12br
10I think the grammar is correct and I only see one mistake: 11i10know12i