. Fill in each gap with the correct form of the words in the brackets.
1. Some parents worry about their children's.................................................. to computer
games. (ADDICT)
2. They believe that playing games for too long can be ..................................................... to
their children's health. (HARM)
3. A computer is very................................... (POWER)
4. We have three new...................... ->............ in our computer center.
(TRAIN)
5. Both............................ and data have to be changed to machine code before
the computer can work on them. % (INSTRUCT)
6. A well- ..................... .'......... person will have to have a good knowledge of
computer science. (EDUCATE)
VI. Put since or for.
1........................ 1968
2......................... twenty years
3.......................... Monday
4.................................. three hours
5.................................. last year
6.................................... my birthday
7..................................... ten o'clock
8..................................... I was born
9..................................... a few days
10..................................... ages
