INFORMATION SYSTEM RESOURCES (i) PEOPLE RESOURCES People are requir…

Components Of An Information System An information system is a system that acc…

Used to (do) A. Study this example situation:   Dennis stopped smoking two…

Have and have got A. Have and have got (= possess, own etc.)   We often us…

Past perfect continuous (I had been doing) A. Study this example situation: …

Past perfect (I had done)   A. Study this example situation:   Sarah went…

Present perfect and past (2) (I have done and I did) A. Do not use the pres…