The ___________________ instruction causes a set of instructions to execute as long as a specified Boolean expression is true.

A modem is required for ________________ Internet access.

A. dial-up B. cable C. DSL D. all of the above

You can drag a(n) ____________________, which is the border at the bottom of a row, until the row is the desired height.

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