Students can practice their grammar skills by reading sentences and underlining whether the verb is transitive or intransitive.

To determine whether a verb is transitive or intransitive, we need to analyze the sentence structure and identify if the verb has a direct object. Here's a brief explanation:

- Transitive verbs: These verbs require a direct object to complete their meaning. The direct object receives the action of the verb.
- Intransitive verbs: These verbs do not require a direct object. They express an action or state without transferring the action to an object.

Let’s go through each sentence and classify the verbs accordingly:

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1. Tommy dreamed about swimming in the ocean.

- Verb: dreamed
- Analysis: The verb "dreamed" does not have a direct object. It expresses an action but does not transfer the action to anything specific.
- Classification: Intransitive

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2. The baby cries when he is hungry.

- Verb: cries
- Analysis: The verb "cries" does not have a direct object. It simply describes an action performed by the subject (the baby).
- Classification: Intransitive

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3. My mother gave me the car keys.

- Verb: gave
- Analysis: The verb "gave" has a direct object, which is "the car keys." The action is transferred to the object.
- Classification: Transitive

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4. Pete reads the newspaper every morning.

- Verb: reads
- Analysis: The verb "reads" has a direct object, which is "the newspaper." The action is transferred to the object.
- Classification: Transitive

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5. The teacher taped the rules to the wall.

- Verb: taped
- Analysis: The verb "taped" has a direct object, which is "the rules." The action is transferred to the object.
- Classification: Transitive

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6. The bears sleep in these caves.

- Verb: sleep
- Analysis: The verb "sleep" does not have a direct object. It simply describes an action performed by the subject (the bears).
- Classification: Intransitive

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7. Shelley forgot his name.

- Verb: forgot
- Analysis: The verb "forgot" has a direct object, which is "his name." The action is transferred to the object.
- Classification: Transitive

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8. My phone rang for several minutes.

- Verb: rang
- Analysis: The verb "rang" does not have a direct object. It simply describes an action performed by the subject (the phone).
- Classification: Intransitive

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9. Dad stood the baby up on the bed.

- Verb: stood
- Analysis: The verb "stood" has a direct object, which is "the baby." The action is transferred to the object.
- Classification: Transitive

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10. Harry solved the problem in front of the class.

- Verb: solved
- Analysis: The verb "solved" has a direct object, which is "the problem." The action is transferred to the object.
- Classification: Transitive

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11. The children slept until after nine.

- Verb: slept
- Analysis: The verb "slept" does not have a direct object. It simply describes an action performed by the subject (the children).
- Classification: Intransitive

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12. He visits his grandparents every Sunday.

- Verb: visits
- Analysis: The verb "visits" has a direct object, which is "his grandparents." The action is transferred to the object.
- Classification: Transitive

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13. Islam called but no one answered.

- Verb: called
- Analysis: The verb "called" has a direct object, which is implied (someone). The action is transferred to the object.
- Classification: Transitive

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14. Frank forgot his lunch at home.

- Verb: forgot
- Analysis: The verb "forgot" has a direct object, which is "his lunch." The action is transferred to the object.
- Classification: Transitive

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Final Answer:

\[
\boxed{
\begin{array}{ll}
1. & \text{Intransitive} \\
2. & \text{Intransitive} \\
3. & \text{Transitive} \\
4. & \text{Transitive} \\
5. & \text{Transitive} \\
6. & \text{Intransitive} \\
7. & \text{Transitive} \\
8. & \text{Intransitive} \\
9. & \text{Transitive} \\
10. & \text{Transitive} \\
11. & \text{Intransitive} \\
12. & \text{Transitive} \\
13. & \text{Transitive} \\
14. & \text{Transitive} \\
\end{array}
}
\]