________ can happen at any time, even when you're already in the midst of one

To open multiple documents at the same time, click the first filename in the Open dialog box, hold down ____, and click one or more additional filenames, then click Open.

A. Shift B. Ctrl C. Alt D. Function

The computer which hosts a website is known as a web ________.

Fill in the blank(s) with the appropriate word(s).