Activity 8.- Use the past perfect to make positive or negative sentences.
Example: the screen/ go / blank
The screen had gone blank.
1.- the charger/ stop / working __________________________________________
2.- I / not/ upgrade/ the operating system __________________________________
3.- She /not/ install/ the updates ________________________________________
4.- They/ reinstall/ the application _______________________________________
5.- She/ not/be able/ to fix the problema
Example: the screen/ go / blank
The screen had gone blank.
1.- the charger/ stop / working