Select the word or phrase that makes the following sentence grammatically correct: Why did we try so hard?

Rationale

Why did we try so hard? has to be followed by "have to".

The phrase "have to" correctly aligns with the past tense "did" in the question, maintaining proper grammatical structure. This choice reflects an obligation or necessity that was applicable at the time referred to in the sentence.

A (has to) YOUR ANSWER

Using "has to" would incorrectly suggest a present obligation, which does not align with the past tense used in the question. The auxiliary verb "has" is singular and present, creating a mismatch with the past tense "did."

B (Haven't) YOUR ANSWER

"Haven't" is a contraction of "have not," which implies a negative present perfect tense. It does not convey the sense of obligation or necessity that the original sentence requires and disrupts the overall intended meaning.

C (had to) YOUR ANSWER

While "had to" is the past tense form of "have to," it creates a different implication than the original sentence. It suggests that the obligation was completed in the past rather than questioning the necessity of trying hard, thereby altering the intended context of the inquiry.

D (have to) CORRECT

The phrase "have to" is the correct choice because it maintains the present form of necessity that pairs with the past tense question "did." This construction effectively conveys the idea that there was a requirement or obligation to try hard at that time, making it grammatically and contextually appropriate.

Conclusion

In this sentence, the choice of "have to" correctly maintains the structure and meaning of the inquiry about past efforts. It emphasizes the necessity that was relevant at the time, while the other options either create tense mismatches or alter the intended meaning. Thus, "have to" is the grammatically correct and contextually appropriate choice.

Select the word or phrase that makes the following sentence grammatically correct: Why did we try so hard?

Why did we try so hard? has to be followed by "have to".

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