Resolution:
- 1. The cat sat on the mat. - This is a declarative sentence, as it makes a statement.
- 2. What time is it? - This is an interrogative sentence, as it asks a question.
- 3. Please close the door. - This is an imperative sentence, as it gives a command or makes a request.
- 4. Wow, that's amazing! - This is an exclamatory sentence, as it expresses strong emotion.
Answer: 1. Declarative, 2. Interrogative, 3. Imperative, 4. Exclamatory