III.    Complete the sentences with a suitable word. The first letter is given.

1.  A s____________ is a very tall building in a city.

2.  In the future r____________ will take care of children, and do housework.

3.  U____________ are believed to be spacecrafts from another planet.

4.  A w____________ TV won’t need any wires or cables.

5.  S____________ energy is power or heat that comes from the sun.

6.  My future house will be on the o___________. It will be surrounded by islands and blue sea.

7.  In the future, there will be more s___________ travel to send people to Mars or to the Moon.

8.  You can s____________ the Internet on a smart TV.