Answer:
1. verb tenses disagree.
e. The kitchen smelled like rosemary when I come home.
2. compound subject and verb disagree.
c. James and Theo walks all the way to the ravine.
3. indefinite pronoun and verb disagree.
a. Each one of these pies look delicious.
4. collective noun and verb disagree.
b. The team were upset by the loss.
5. subject disagrees with the verb it comes after.
d. Is your dog and cat happy you're home?
Explanation:
1. Smelled (past), come (present);
it should be "The kitchen smelled like rosemary when I came home."
2. The subject includes two people, but the verb is singular.
It should be "James and Theo walk all the way to the ravine."
3. <em>Each </em>is always singular and requires a <em>singular</em> verb.
It should be "Each one of these pies looks delicious.
4. When a collective noun is acting <em>as a unit</em>, use a <em>singular</em> verb.
It should be "The team was upset by the loss."
5. The subject includes <em>two</em> pets, but the verb is <em>singular</em>.
It should be "Are your dog and cat happy you're home?".