Identifying Statements and Questions

Which of the following is a complete sentence?
The dog.
The dog barks.

Which sentence is a question? Options: Is it fun?, It is fun.

Which sentence is a statement? Options: I see a cat., Do I see a cat?

Which of the following is a complete sentence? The sun. The sun shines.

Which sentence is a question? Options: Can you play?, You can play.

Which sentence is a statement? Options: The sky is blue., Is the sky blue?

Which of the following is a complete sentence?
The fish.
The fish swims.

Which sentence is a question? Options: Are you ready?, You are ready.

Which sentence is a statement? Options: The car is fast., Is the car fast?

Which of the following is a complete sentence?
The bird.
The bird flies.