Listening exercises 

1. http://www.esl-lab.com/phone/phonerd1.htm
2. http://www.bbc.co.uk/worldservice/learningenglish/business/talkingbusiness/unit1telephone/2messages.shtml
3. http://www.web-esl.com/phones/ansmchns.htm
4. https://linclab.com/taking-telephone-messages/     (some additional) 

Office Items Vocavulary

http://www.saberingles.com.ar/lists/office.html

1. http://www.saberingles.com.ar/lists/ioffice.html
2. https://www.esolcourses.com/content/englishforwork/jobvocab/office/office-stationery-vocabulary.html
3. http://www.saberingles.com.ar/exercises/142.html
4. http://www.eflnet.com/vocab/officesupplies_vocabulary.php
5. http://www.eflnet.com/vocab/dictionary/officesuppliesquiz3.php
6. https://7esl.com/stationery-and-office-supplies-vocabulary/
7. http://www.eflnet.com/vocab/officesupplies_vocabulary.php      (exercises)
8. http://www.leaflanguages.org/spanish-vocabulary-school-and-office-supplies/   (examples in sentences)

            Office Items descriptions

            http://www.vocabulary.cl/Lists/Office_Equipment.htm

Office Items (Listening and Vocabulary) activities 

http://www.esolcourses.com/topics/at-the-office.html

Parts of the computer exercises

1. http://ict.stmargaretsacademy.org.uk/computing/software/exercisesindex.html
2. http://www.englishexercises.org/makeagame/viewgame.asp?id=5167
3. http://www.englisch-hilfen.de/en/exercises/vocabulary16/computer.htm
4. http://www.esolcourses.com/content/ict/vocab/computerwords/computerwordsquiz1.html
5. http://www.pitara.com/activities/quiz/online.asp?qname=computer

Read comprehension exercises: My Office

http://esl.about.com/library/beginner/bl_beginner_read_office.htm