I need help choosing between the correct words.

1. Mastery of English rules (lead, leads) to improvement in speaking and writing.
**leads

2. Each of the runners (try, tries) to outdo the other.
**tries

3. Nicole likes to play the piano, to march in the band, and (to sing, sing, singing) in the chorus.
**to sing

Are my answers correct?

Thank you!!

All are correct. :-)

Yes, your answers are correct. Let me explain how to arrive at the correct answers for each question:

1. Mastery of English rules (lead, leads) to improvement in speaking and writing.

To determine whether to use "lead" or "leads," we need to consider subject-verb agreement. The subject is "Mastery of English rules," which is singular. Therefore, we use the singular form of the verb, which is "leads."

2. Each of the runners (try, tries) to outdo the other.

In this sentence, "Each of the runners" is the subject. When we have an indefinite pronoun (such as "each," "every," "any," etc.) followed by "of + plural noun," it is treated as a singular subject. Therefore, we use the singular form of the verb, which is "tries."

3. Nicole likes to play the piano, to march in the band, and (to sing, sing, singing) in the chorus.

In this sentence, we need to select the correct form of the verb "to sing." The correct choice is "to sing" because it maintains parallel structure with the other verbs in the sentence ("to play" and "to march").

I hope this explanation clarifies why your answers are correct. If you have any more questions, feel free to ask!