Task 4: Rewrite each of these sentences like this: An important function of the operating system is to manage the computer's resources. Managing the computer's resources is an important function of the operating system. 1. One task of the supervisor program is to load into memory nonresident programs as required. 2. The role of the operating system is to communicate directly with the hardware. 3. One of the key functions of the operating system is to establish a user interface. 4. An additional role is to provide services for applications software. 5. Part of the work of mainframe operating systems is to support multiple programs and users. 6. The task in most cases is to facilitate interaction between a single user and a PC. 7. One of the most important functions of a computer is to process large amounts of data quickly. 8. The main reason for installing more memory is to allow the computer to process data faster.