What is the most important part of a business letter?

a. the type of font and format
b. the opening and closing paragraphs
c. the word choice and correct spelling
d. the use of correct grammar and sentence structure

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

Which statement is most accurate regarding the speaking-writing connection? a. written words seldom reflect the words people use when they speak. b. to own a word, write it over and over again. c. the words used by writers are not normally used in speaking. d. to own a word, speak it.

What is the main difference between hearing and listening? a) hearing is easy; listening is hard. b) hearing involves the outer ear; listening involves the inner ear. c) hearing is the physical activity; listening involves processing the information. d) none of the above