Question: Lilleheden was involved in the development of the frames from an early stage with the Architect White Design and Engineers Buro Happold and completed the design supply and erection of the structure as subcontractors to Willmott Dixon Construction
Please fix the punctuation.
Fixed: [Lilleheden was involved in the development of the frames from an early stage with the Architect (White Design) and Engineers (Buro Happold) and completed the design, supply and erection of the structure as sub-contractors to Willmott Dixon Construction.]

Question: ownership of dwelling 2
Please fix the punctuation.
Fixed: [ownership of dwelling (2)]

Question: In the case that your XL file doesnt open it is highly likely that you do not have the correct software application installed on your PC to view or edit XL file extensions
Please fix the punctuation.
Fixed: [In the case that your XL$ file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit XL$ file extensions.]

Question: Use only mouse to control Move by moving mouse and drop pumpkins in wheel barrel by left clicking
Please fix the punctuation.
Fixed:
[Use only mouse to control. Move by moving mouse, and drop pumpkins in wheel barrel by left clicking.]