Question at position 51 He Question Blank 1 of 1[input] (lose) his keys yesterday.

Question

BlackTom AI · Accepted Answer

Restating the prompt: The prompt shows a fill-in-the-blank sentence: 'He ____ his keys yesterday.' The provided answer is 'lost', and there are no answer options given to evaluate against.

Reasoning for the correct completion: The sentence uses the past tense to describe a completed action that occurred yesterday. The subject 'He' requires a past tense verb form of 'to lose'. The correct past tense form of the irregular verb 'lose' is 'lost'. Therefore, 'He lost his keys yesterday.' is grammatically correct and semantically appropriate.

Why other potential forms would be incorrect (in a typical multiple-choice or fill-in context): If we considered alternatives like 'loses', that would be present tense and mismatch the time indicator 'yesterday'. 'Losing' would be present participle, which would require different syntax (e.g., 'He was losing his keys yesterday' or 'He is losing his keys yesterday'—the latter is ungrammatical due to tense mismatch). 'Lose' is the base form and does not agree with the past time adverb 'yesterday'. In short, the only grammatically correct past tense form for this context is 'lost'.

Additional notes on usage: Irregular verb conjugation often trips learners up; memorizing common irregulars like lose/lost can prevent errors in past-time narration. The sentence structure 'Subject + past tense verb + object + time adverb' is the standard simple past construction here, which aligns with the meaning of a completed action in the past.

Question at position 51 He Question Blank 1 of 1[input] (lose) his keys yesterday.

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