CAD/CAM makes it possible to custom-design products to meet the needs of with .

Which sentence uses the past tense of to study correctly? a. mark is studying for his math test with margie. b. mark will study for his math test with margie. c. mark studied for his math test with margie.

3. how could the following sentence be rewritten as an exclamatory sentence? how dangerous was the saber-toothed tiger? a. tell someone how dangerous the saber-toothed tiger was. b. the saber-toothed tiger was dangerous. c. the saber-toothed tiger was dangerous! d. no change is necessary. c. the saber-toothed tiger was dangerous!

What did mark twain contribute to the history of the novel? select all that apply.