C. Past Simple, Past Perfect Simple or Past Perfect Progressive 1.I __________________________ (study) for 5 years, so I was tired. 2.I __________________________ (love) her until I __________________________ (find) out that she __________________________ (cheat) on me for a year. 3.Maria __________________________ (work) at the company for 20 years until they __________________________ (fire) her one day for no reason. 4.John __________________________ (wait) for Paula for 1 hour before she finally __________________________ (arrive). 5.Lisa __________________________ (have) trouble seeing the screen because she __________________________ (not/bring) her glasses. 6.Cheryl __________________________ (not/wait) long when John __________________________ (show up). 7.I __________________________ (exercise) for 30 minutes when the phone __________________________ (ring). 8.The traveler suddenly __________________________ (realize) that he __________________________ (leave) home without his passport.