II. Complete the following sentences with the correct form of the words in the to the brackets.

1. They were very surprised when they knew his                                   . (nation)

2. He is so                    to his community because he never misses an opportunity to help people. (activity)

3. In addition to hand gestures, facial                     also belongs to non-verbal communication. (express)

4. Despite the              of chatting online, we will still be using face-to-face meetings to communicate with each other in the year 2050. (popular)

5.   Some types of computer games can be _____________________. (educate)

6. Smartphones can vary from day to day due to new _____________________ by different companies in the world. (invent)

7. The _____________________ of a nuclear power plant costs a lot of money. (construct)

8. Space _____________________ brings about many benefits to science. (explore)

9. Life is become easy and _____________________ through science and technology. (comfort)

10. Nuclear waste is _____________________ for both humans and the environment. (harm)