Answer 1

1 installed

2 disastrous

3 considerably

4 necessities

5 effective

6 friendliness

Answer 2

why don't we have a computer ___installed in the lab room? (installation)

many chemicals have _disastrously___ affected the environment. (disaster)

beause of the outbreak of Covid-19, the course has been shortened __considerably_.(considerate)

food and clothing are basic _necessities__ of life. (need)

we are disppointed that we made an _effective___ attempt to win the match. (effect)

 

she can find the ___friendliness___ of the people everywhere she goes during her visit. (friend)