Food companies try many different strategies to appeal to kids. When they have a product that has been available for years, they may change it to get new attention. They may change the flavor of the food or the design
of the package. One company created a mystery about their changes to a popular breakfast cereal. They invited
kids to find out which employee had changed the shape of the cereal, Advertisements featured a group of Kids
looking for the guilty person, Kids, eager to solve the mystery, could go to the company's Web site to follow clues,

The company used
advertising
A
continuous
B
creative
С
mature
D
humane

(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 sentence will fatima’s teacher most likely ask her to revise?

Iwill have sailed around the world by the end of next year. what is the verb form in the sentence? future perfect past emphatic present progressive past perfect