Directions: Read the sentences carefully. Identify if the sentence is Simple Sentence or Compound Sentence.
5. The submarines used during the war could not stay underwater for long periods; they navigate at the surface just like other ships at that time. (simple sentence or compound sentence)
6. These early submarines were worked by hand (simple sentence or compound sentence)
7. They were slow and underpowered. (simple sentence or compound sentence)
8. In the 1870s, an English clergyman invented a submarine, and this was powered by a steam engine (simple sentence or compound sentence)
9. By 1900, petrol engines drove submarines on the surface but petrol needed air to burn. (simple sentence or compound sentence)
10. The nuclear-powered submarine can travel around the world without rising to the surface, and it can strike enemy targets thousands of miles away with missiles (simple sentence or compound sentence)