Question

b. simple present: instructions: choose the correct conjugation of the verb to be. am is are 21. she _ a teacher at the local school. 22. it _ important to study for exams. 23. the books _ on the shelf. 24. you _ always so helpful. 25. my brother and i _ twins. 26. they _ my best friends. 27. the sun _ bright and warm today. 28. i _ very excited about the upcoming holiday. 29. pablo and karen _ in the same class every year. 30. he _ an excellent cook.

Explanation:

• En inglés, "am" se usa con la primera persona singular "I". "Is" se usa con la tercera persona singular (he, she, it). "Are" se usa con la segunda persona singular y plural (you), y con la tercera persona plural (they).
• 21. "She" es tercera persona singular, entonces se usa "is".
• 22. "It" es tercera persona singular, entonces se usa "is".
• 23. "The books" es plural, entonces se usa "are".
• 24. "You" se asocia con "are".
• 25. "My brother and I" es plural, entonces se usa "are".
• 26. "They" es tercera persona plural, entonces se usa "are".
• 27. "The sun" es tercera persona singular, entonces se usa "is".
• 28. "I" se asocia con "am".
• 29. "Pablo and Karen" es plural, entonces se usa "are".
• 30. "He" es tercera persona singular, entonces se usa "is".

Answer:

1. is
2. is
3. are
4. are
5. are
6. are
7. is
8. am
9. are
10. is