Answer:
Carol has a piano lesson tomorrow.
Explanation:
The first statement used the word “has” which refers to the subject and the singularity of Carol. However, if the sentence uses have, it has to be written in these structures:
Carol will have her piano lesson tomorrow.
Carol will be having her piano lesson tomorrow.
But the two other statements are written erroneously because of these reasons:
1. Have is usually used to support two or more subject or noun, for example:
Carol and her friends (two subjects) have a piano lesson tomorrow.
Carol’s friends (plural) have a piano lesson tomorrow.
2. There is no such word as “haves”.
Explanation:
