The sentence that uses direct address is "Where are you going, Fred?".
Direct address in grammar means that you are speaking directly to a person or group of people either calling them by name, as in example, "Where are you going Fred?", or using the second person pronoun "you". As in the example above, the name is often separated from the rest of the sentence or question by a comma. For example, "Maria, I need you to finish your homework now."
Answer:
This is a sentence.
Explanation:
It contains the subject, students, and the predicate, are working. This is the skeleton of the sentence, while also providing adverbial prepositional phrases that tell us where they are working, in the classroom, and how they are working, on grammar.
Multitasking
NOS stands for Network Operating System. So let's take a look at the available options and see what would switch the CPU between different programs.
Directory services
* This is an important component of a NOS that deals with managing resources such as users, folders, files, etc. But it's not focused on sharing the CPU between different programs. So it's a bad choice.
Multitasking
* This is pretty what it says on the label. It's allowing multiple tasks (programs) to operate on the CPU as if each task has it's own CPU. It effectively gives each program a virtual copy of the CPU with some well known interfaces while preventing the program from directly manipulating the hardware. And this is the correct choice.
File sharing
* This is a useful ability of a NOS in that it coordinates and permits multiple programs to share common files. But it's not the correct choice for this question.
Security services
* This is the management of user passwords, and protecting different resources such as only permitting users is specific groups from access specific files. Useful, but not the right answer.
June 4, 1940
House of Commons
The position of the B. E.F had now become critical As a result of a most skillfully conducted retreat and German errors, the bulk of the British Forces reached the Dunkirk bridgehead. The peril facing the British nation was now suddenly and universally perceived. On May 26, “Operation Dynamo “–the evacuation from Dunkirk began. The seas remained absolutely calm. The Royal Air Force–bitterly maligned at the time by the Army–fought vehemently to deny the enemy the total air supremacy which would have wrecked the operation. At the outset, it was hoped that 45,000 men might be evacuated; in the event, over 338,000 Allied troops reached England, including 26,000 French soldiers. On June 4, Churchill reported to the House of Commons, seeking to check the mood of national euphoria and relief at the unexpected deliverance, and to make a clear appeal to the United States.
