Which revision corrects the improper shift in the following sentences. Do not feed the animals. Visitors must not touch the animals’ cages.

1. Do not feed the animals. Do not touch the animals’ cages.
2. Do not feed the animals. You must not let the animals’ cages be touched.
3. Do not let the animals be fed. You must not touch the animals’ cages.
4. You must not feed the animals. Do not touch the animals’ cages.

*Also, what is the mood of the verb in the first example sentence? Is it “imperative” since it is giving a command?

Which can writers improve their writing

(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.”)

Langston hughes cited walt whitman as one of his greatest influences and some believe that hughes wrote "i, too, sing america" in response to whitman's "i hear america singing." using on whitman's poem. consider aspects such as structure, there, word, choice, etc., as you craft your response. your response will be scored on how well you: -demonstrate your understanding of the ideas of the text -use evidence from the text to develop and support your ideas -organize your response in a logical manner -demonstrate an appropriate writing style through the use of precise word choice and varied sentences -use standard conventions for writing