Walt Whitman was a poet during the 1800's, who later in America's modern times became popular for his unique style of poetry. Whitman thought that poetry should be spoken in the "language of ordinary men." His use of the vernacular and vocabulary was unusual and unique for poets of his time period. His poems were most often times about nature and humanity. His poems also helped shed light on America's issues as it began to grow as a country. Sadly Walt Whitman wasn't given full credit for his unique and influential style of writing until after he had passed away.
The following answers use correct punctuation: (a) Dear Ms. Collin: When the error message appears on the screen, you should exit the program, right. (b) When you leave at 5:00 p.m., please shut the door and lock it; however, do not set the alarm.
In sentence (c) the punctuation in 1980's is not correct. It is a common mistake to include apostrophes when pluralizing a number or an abbreviation. Apostrophes are generally used in contractions and to indicate the possessive case.
Answer:
After he retires my grandfather plan to visit the base of Mount Everest and take a boat ride down the Amazon River