Which of the following is a run-on sentence? A. My favorite seasons are spring and summer; I'm just happy when it is warm.

B. We finally taught our parrot to say “Good morning,” but now she won't stop saying it!

C. The sweet aroma of the rose bushes filled the morning air.

D. Ginger was a stray cat we had to take her to the vet to make sure she was healthy.

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.