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I didn’t realize that I ---- (lose) my keys until I arrived home.
Correct answer is 'had lost'. Can you explain this answer?
Verified Answer
I didn’t realize that I ---- (lose) my keys until I arrived home...

The correct answer for the given sentence is "had lost." Here's a detailed explanation:
Explanation:
The sentence is in the past tense, and it describes an action that happened before another past action. In such cases, we use the past perfect tense.
- The past perfect tense is formed by using "had" + past participle of the verb.
- In this case, the verb is "lose," and its past participle form is "lost."
Breaking down the sentence:
"I didn’t realize that I ---- (lose) my keys until I arrived home."
- The first part of the sentence implies that the speaker was not aware of losing their keys.
- The second part of the sentence indicates that the realization of losing the keys occurred when the speaker arrived home.
Putting it together:
To express the idea that the action of losing the keys happened before the speaker arrived home, we need to use the past perfect tense. Therefore, the correct form of the verb "lose" in the sentence is "had lost."
Final answer:
"I didn’t realize that I had lost my keys until I arrived home."
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I didn’t realize that I ---- (lose) my keys until I arrived home.Correct answer is 'had lost'. Can you explain this answer?
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