Final answer:
The verb 'to be' in its correct forms (am, is, are) is essential in sentence construction.
Explanation:
The correct form of the verb to be for the given sentences is:
- We are lucky to have such a wonderful family.
- Together, we are a great team.
- Sarah is the youngest in our family.
- Lisa is in high school.
- Max is our playful dog.
Learn more about Verb 'to be' here:
https://brainly.com/question/40296092