His income for the year, however, was less than his secretary's. Fred, not realizing what he was doing, insulted his friend. My uncle, who is eighty years old, walks three miles every day. The book THAT HE LENT ME was very helpful. THE DOOR is my friend.
Exercises -Punctuate the following sentences.
Patterson Tower the recently completed office building is a monument of concrete ugliness. The movie that I wanted to see is no longer playing. Each person who enters the contest must send in two box tops. John did not however decide to buy the car. The Mississippi River which once flowed north into Hudson's Bay flows south into the Gulf of Mexico.