The latest security update [1] ________ several improvements to the company network. It will be installed automatically tonight.

Please save open files [2] ________ 9:00 P.M., when the installation is scheduled to begin. Computers may restart during the process.

[3] ________. Employees who are working late should contact the help desk before the installation starts.

The update is expected to take less than thirty minutes. [4] ________, please do not turn off your computer during that time.

The latest security update [1] ________ several improvements to the company network. It will be installed automatically tonight.

Please save open files [2] ________ 9:00 P.M., when the installation is scheduled to begin. Computers may restart during the process.

[3] ________. Employees who are working late should contact the help desk before the installation starts.

The update is expected to take less than thirty minutes. [4] ________, please do not turn off your computer during that time.