Question

Which of the following is an example of a sentence that uses parallel structure?  She plays games all night long and sleeping in the morning.
 She is playing games all night long and sleeps in the morning. 
She is playing games all night long and slept in the morning. 
She plays games all night long and sleeps in the morning.

Answer 1

The last one has parallel sentence structure. What that means is that the verbs in the sentence have the same structure (in this case "she plays/sleeps" - they both end in -s). You might also notice that if you read them all out loud, the other three sound somewhat strange.