Answer Key with Explanations
Part A: Choose the Correct Form
- 
entered / was talking
➡️ "entered" = short action that interrupts; "was talking" = background ongoing action. - 
was preparing / went
➡️ She was in the middle of preparing → ongoing. Lights suddenly went out → short completed action. - 
was travelling
➡️ Emphasises duration over a period ("at this time last year"). - 
never admitted / was cheating
➡️ "admit" is a simple completed action (state verb). "was cheating" = ongoing action in progress during exam. - 
were playing / was cooking
➡️ Both actions were simultaneous and continuous in the background. - 
was reading / had recommended
➡️ Reading = ongoing, background action. Recommendation happened earlier, before reading → Past Perfect. - 
was speaking / interrupted
➡️ Speaking = longer action; interruption = short completed action. - 
were always arguing
➡️ Past Continuous + always = irritation/annoying habit. - 
didn’t notice / was following
➡️ "didn’t notice" = single complete fact; "was following" = background action she failed to see. - 
had started / were dancing
➡️ "had started" = action completed before another action; "were dancing" = ongoing background. 
Part B: Rewrite the Sentences
- 
✅ While she was cooking, the phone rang.
➡️ Background = cooking; interruption = ringing. - 
✅ I knew the answer but I was too shy to say it.
➡️ "know" is a state verb → not used in continuous. - 
✅ He dropped the glass while he was washing it.
➡️ Washing = ongoing; drop = sudden interruption. - 
✅ They were always complaining about the service at that restaurant.
➡️ Continuous + always = irritation. - 
✅ We were playing chess while the rain was falling.
➡️ Both ongoing simultaneous actions. 
Part C: Error Correction
- 
❌ was met → ✅ met
➡️ "meet" = simple past, not passive here. - 
❌ was entered → ✅ entered
➡️ "entered" = short completed action. - 
❌ were studied → ✅ were studying
➡️ "study" needs continuous to show ongoing. - 
❌ was hearing → ✅ heard
➡️ "hear" is a state verb → not normally continuous. - 
❌ was never liked → ✅ never liked
➡️ "like" = state verb, use simple. 
Part D: Mixed Tenses (Challenge)
- 
was walking / realised / had left
➡️ Background = walking. Realised = short event. Leaving wallet = happened earlier → Past Perfect. - 
were discussing / arrived
➡️ Background = discussing. Arrival = interruption. - 
had already finished / asked
➡️ Report finished before boss asked → Past Perfect + Past Simple. - 
was trying / were playing
➡️ Trying = ongoing; playing = ongoing disturbance. - 
were sleeping / was still working
➡️ Majority = sleeping (background). Narrator = still working. 
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