IV. Fill in each numbered blank ONE suitable word.

1. invention (Computers are a very important invention)
2. every (Almost every profession uses computers)
3. since (Used since the sixth century)
4. a (5,000 additions a second)
5. getting (Computers are getting smaller)
6. about (About the size of the end of a finger)
7. with (Network with each other)
8. Internet (The worldwide computer network)

V. Give the correct form of the words in bracket.

1. uncomfortable (These shoes are smart, but they are very uncomfortable.)
2. residents (The residents in this town are very friendly.)
3. anxiety (People use first-aid to ease the victim's pain and anxiety.)
4. departure (The train made a late departure.)
5. volcanic (Some people think that gods create volcanic eruption.)
6. acquaintances (Everyone has a number of acquaintances but no one has many true friends.)
7. conservation (We are now fully aware of the conservation of natural resources.)
8. criticize (You shouldn't criticize others if you also have a lot of mistakes.)
9. imagination (A lot of toys encourage children's imagination.)
10. products (The factory has provided cheaper products lately.)
11. surprisingly (A holiday in America can be surprisingly cheap.)

IV. 

invention
every
since
a
becoming
about
with
Internet

V. 
uncomfortable
residents
anxiety
departure
volcanic
acquaintances
conservation
criticize
imagination
products
surprisingly

VI. 
C -> the next day
C -> applying