Self Check. Arrange the sequence for adjusting line spacing. Press Ctrl 5 this will change the paragraph to 1.5 line spacing. Change the line spacing option to 1.5 lines. Click on 1.0 to change the spacing to single line spacing. Press Ctrl 2 this will change the paragraph to double line spacing. Click OK when done. Save changes to the document. Click the arrow next to the Line Spacing icon on the toolbar. Click in the first paragraph. Display the Paragraph formatting options Press ctrl 1 this will change the paragraph to single line spacing.