In Microsoft Office Word 2007, you can use the formatting options Mini toolbar to quickly format text. The Mini toolbar appears automatically when you select text. It also appears with the menu when you select text and then right-click.
Make text bold
Select the text that you want to make bold, and move your pointer to the Mini toolbar above your selection.
Click Bold .
Keyboard shortcut CTRL+B
Note: Click Bold again to unbold the text that you selected.