Please help...I do not know what I am supposed to do. This is for Computer Science class, using Pep/8

Slides 42 - 44 in the PowerPoint presentation for this chapter, shows how to develop a pseudocode algorithm to read in paris of positive numbers and print each pair in order. Since there may be more than one pair of numbers, a count-controlled loop is used to read in all the pairs. Here is the pseudocode algorithm from the textbook:

Write "How many pairs?"

Read numberOfPairs

Set numberRead to 0

While (numberRead < numberOfPairs)

 Write "Enter two numbers: "

 Read number1

 Read number2

 If (number1 < number2)

 Print number 1, " ", number2

 Else

 Print number2, " ", number1

 Set numberRead to numberRead + 1

Modify this pseudocode algorithm so that it uses an event controlled loop which ends when the user enters a sentinel value for the first number (for example, your sentinel could be an unusual number like 999, but you can decide what the sentinel value should be). Write a test plan for this program. Write the program in assembly language and test it using your test plan.