3. complication, complicate, complicated, complicating, complicatedly. a) There can be many involved in setting up a computer in an old building.

b) It is sometimes a very process getting into a computer installation for security reasons.

c) It is sometimes very to explain computer concepts.
4. difference, differ, different, differently, differential, differentiate.

a) There isn’t a very big in these computers.

b) There are many computer manufacturers today, and a buyer must be able to between the advantages and disadvantages of each.

c) The opinions of programmers as to the best way of solving a problem often greatly.

5. reliably, rely on, reliable, reliability.

a) Computers are machines.

b) If you don’t know the meaning of a computer term, you can special computer dictionary.

c) Computers can do mathematical operations quickly and .