Please check my work.

Identify whether each sentence is complex, an exclamation, declarative, or interrogative.

1. Tim likes soup, so Mary bought tomatoes. ----- Complex

2. Oh no! ----- Exclamation

3. Do you want to play in the Garden? ----- Interrogative

4. In the story, the author told how useful a sled can be. ----- Complex

5. She plays the piano. ----- Declarative

6. I love u! ----- Exclamation

7. My brother baked a cake last night. ----- Declarative

8. The car broke down, but a rescuer van arrived within minutes. ----- Complex

9. If you leave late, take a cab home. ----- Complex

10. What did you name your new puppy? ----- Interrogative

All are correct except #8.

8. The car broke down, but a rescuer van arrived within minutes. ----- Complex

Actually this is a compound sentence, but none of the other labels fit it. Here's the difference:

Compound sentence = two independent clauses, joined by comma and coordinating conjunction or semicolon
(This means that you have two simple sentences connected by a comma and conjunction, such as this: The car broke down, and the van arrived.)

Complex sentence = one independent and at least one dependent clause
(This means that you have one simple sentence connected to a dependent clause, such as this: Take a cab home [<~~independent clause] if you leave late [<~~dependent clause].)

http://grammar.ccc.commnet.edu/grammar/sentences.htm
and
http://grammar.ccc.commnet.edu/grammar/sentences.htm#sentence_types

Yes! Thank you for explaining difference between compound sentence and complex sentence.

Should I leave it as a complex sentence because none of the other labels fit it, or mark it as a “compound sentence”?

I'd mark it as compound, and then let your teacher know you understand the difference!

Thank you! I appreciated.

You're very welcome!

Dainel decide before he was tempted

Your answers are correct. Here's an explanation for each sentence:

1. Tim likes soup, so Mary bought tomatoes. - Complex: This is a complex sentence because it contains an independent clause ("Tim likes soup") and a dependent clause ("so Mary bought tomatoes") connected by the subordinating conjunction "so."

2. Oh no! - Exclamation: This is an exclamation because it expresses strong emotion or surprise.

3. Do you want to play in the Garden? - Interrogative: This is an interrogative sentence because it asks a question, indicated by the use of the verb "do" and the question mark at the end.

4. In the story, the author told how useful a sled can be. - Complex: This is a complex sentence because it has an independent clause ("the author told how useful a sled can be") and a dependent clause ("In the story") introduced by the subordinating conjunction "in."

5. She plays the piano. - Declarative: This is a declarative sentence because it makes a statement.

6. I love you! - Exclamation: This is an exclamation because it expresses strong emotion or sentiment.

7. My brother baked a cake last night. - Declarative: This is a declarative sentence because it makes a statement.

8. The car broke down, but a rescuer van arrived within minutes. - Complex: This is a complex sentence because it contains two independent clauses ("The car broke down" and "a rescuer van arrived within minutes") joined by the coordinating conjunction "but."

9. If you leave late, take a cab home. - Complex: This is a complex sentence because it starts with a dependent clause ("If you leave late") and is followed by an independent clause ("take a cab home").

10. What did you name your new puppy? - Interrogative: This is an interrogative sentence because it asks a question, indicated by the use of the question words "what" and "did" and the question mark at the end.