2) choose the sentence that shows correct verb usage. a) we go to the store and bought bread yesterday. b) we went to the store and buyed bread yesterday. c) we went to the store and bought bread yesterday. d) we gone to the store and bought bread yesterday.

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.