I

1,  The scientist said that cloning would become more popular in the following century.   

2,  Dr. Nelson send that every home would have at least one robot to perform any boring task.

3,  Our teacher told us that parents didn’t allow children to play computer games for a long period of time

4,  The doctor told his patient that nutrition pills could cause serious side effects.

5, The physicist said that nuclear power plants didn’t require a lot of space

6,    The politician told the audience that wrong decisions in Chernobyl had caused a big nuclear explosion

II

21, development

22, safety; risky

23, scientist; researcher; scientific

24, dangerous

25, production

26, industrial; medical

27, technological

28, ability

Chúc bạn sức khỏe và học tốt nha!!!