Read the following paragraph carefully, checking for correct verb
tense and form. Strike out any verbs that are not consistent, that
are the incorrect form, or that do not express the correct time
period, and write the correct form above them.

     (1) Since 1900, Americans had seen many changes in technology

and their everyday lives. (2) It is impossible for someone who was

30 in 1900 to anticipate the many changes in our country. (3) A

major change has been in transportation. (4) The development of

mechanical engines was making the horses and buggy obsolete. (5)

The automobile had given Americans the freedom to travel long

distances for vacations or work. (6) Also, consider the invention

of the airplane. (7) It use to take months to travel from New York

to San Francisco; now it will take only a few short hours. 

(8) Moreover, Americans currently can travel to the moon. (9) Such

inventions are no longer dreams of science-fiction writers. 

(10) Another major change has been in power sources. (11) Nuclear

power plants generated electricity for many cities, and solar

panels provided energy to heat our homes. (12) Finally, computers

will have enabled us to store information and provide us with

entertainment. (13) Certainly, Americans have benefitted from this

technology. (14) Recent technology was also revolutionizing our

daily lives. (15) Microwave ovens cook our food quickly, and many

people enjoy video games. (16) In addition, an ever-increasing

number of Americans owned home computers which keep an inventory of

household supplies, balance bank statements, will educate us, and

have provided entertainment. (17) Also, the car has give Americans

freedom and mobility; in fact, a car seems to be a necessity in

modern America. (18) Because of technology, our lives bore little

resemblance to those of Americans in 1900.