Question

Which sentence is a run-on?

Sarah felt drowsy in school today she had trouble sleeping last night.
Although it chews up his belongings and barks a lot, Adam loves his new puppy.
The house needed to be cleaned before our guests arrived that afternoon.
We decided not to go to the beach yesterday because it looked like it was going to rain.

Answer 1

the first sentence

Explanation:

there needs to be a comma between today and she

Answer 2

Answer:

1 st one

Explanation: