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Sentence Correction: Pronoun Questions - One

An important lesson in life is that if you make a promise, one needs to keep it.

Good!

This answer is grammatically incorrect because the pronouns you and one do not agree in number. Remember that one agrees with itself only.

What helps us identify the mistake is the following Stop Sign:

Any pronoun in the underlined part or after it

While this answer choice corrects the original Pronoun mistake, it creates a Subject Verb Agreement mistake: the singular subject one does not agree with the plural verb make.

This answer choice repeats the original Pronoun mistake: the pronouns you and one do not agree in number. Remember that one agrees with itself only.

What helps us identify the mistake is the following Stop Sign:

Any pronoun in the underlined part or after it

This answer choice repeats the original Pronoun mistake: the pronouns you and one do not agree in number. Remember that one agrees with itself only.

What helps us identify the mistake is the following Stop Sign:

Any pronoun in the underlined part or after it

In addition, this answer choice changes the meaning of the original sentence by replacing the word An with The most.

An important lesson in life is that if you make a
An important lesson in life is that if one make a
An important lesson in life is that if we make a
An important lesson in life is that if one makes a
The most important lesson in life is that if you make a