How many years did anne frank write in her diary?

Read the paragraph. [1] this year, the linden high school debate team is bigger than ever. [2] neither the students nor the faculty advisor has much experience, but it’s a smart, capable, argumentative group! [3] we’ve tried to make a schedule that allows us to study, prepare, and scrimmage. [4] only one of us are able to practice on thursdays or fridays, which can be inconvenient. [5] even so, we feel prepared and excited for this year’s tournaments. [6] our first debate is on october 10th, and we are excited that it is so soon. which two sentences have subject-verb agreement errors? sentence 2 and sentence 4 sentence 2 and sentence 1 sentence 3 and sentence 5 sentence 4 and sentence 6

Dogs make wonderful pets because they us stay happy and healthy. the topic sentence is "dogs make wonderful pets." , is this correct? i keep doubting myself.

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.