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Read the teenager's dramatic excuses for not doing their homework. Select ALL the sentences that use the correct verb tense and time word combination.
The correct answers are I lost my textbook yesterday!, I have already finished the easiest questions., and I haven't started the essay yet.
We use the Past Simple for finished actions with specific past time markers (like yesterday).
We use the Present Perfect for actions connected to the present, often with words like already and yet.
"I have lost... yesterday" is incorrect because yesterday is a finished time. "I finished... since 8 PM" is incorrect because since requires a perfect tense.