Microsoft Word does not respond to keyboard shortcuts

I have a MacBook Pro with Microsoft Word 2011 installed on it.

For some reason, all the editing keyboard shortcuts - such as Cut: Cmd + X, Copy: Cmd + C, and Undo: Cmd + Z - does not work in it.

My friend who also has Microsoft Word 2011 on a MacBook Pro has his keyboard shortcuts working fine.

This situation really hinders my work, what could be the problem?

Check in the edit menu and see what MS Word thinks its shortcut keys are for cut, copy, and paste.

If they're not the keys you’re expecting, maybe something was accidentally configured in Word’s preferences, e.g. some alternate key mapping.

Also, verify that there are not alternative key mappings specified in the Mac System Preferences, both system wide and application specific, that may be modifying your shortcut mappings to other keys.

If the configuration of the hot keys disappeared from the Edit menu, you can reconfigure them through the menu "Tools", option "Customize keyboard"

My keyboard shortcuts for Copy, Cut, and Paste also disappeared under Mountain Lion. Going to Tools/CustomizeKeyboard did not help (the shortcuts are listed under Keyboard Shortcuts but do not show up on the Edit menu).

The workaround suggested above works. In System Preferences/Keyboard/Keyboard Shortcuts/Application Shortcuts, you can add Microsoft Excel (use the + key, then in the Application pulldown menu you might have to go to Other and navigate through the Microsoft Office menu to be able to select Excel). Then I just added cmd-c, x, and v. The keyboard shortcuts still do not appear in Excel's edit menu, but the keyboard shortcuts work as they had done previously.