That clauses.

1.
People who watch TV spend more on consumer goods. Experts...
Experts think that people who watch TV spend more on consumer goods.

2.
The majority of familes have TV on during mealtimes. It's disturbing...
It's disturbing that the majority of families have TV on during mealtimes.

3.
Most people multitask and do other things while watching TV. What's interesting...
What's interesting about most people is that are multitask and do other things while watching TV.

4.
Young people who watch a lot of TV are not very happy with their lives. One recent study...
One recent study says that young people who watch a lot of TV are not very happy with their lives.

5.
It's not good for anyone to have a TV in the bedroom. My feeling...
My feeling is that it's not good for anyone to have a TV in the bedroom.

6.
TV is a good thing because there are lots of good educational programs. My opinion...
My opinion is that TV is a good thing because there are a lots of good educational programs.

7.
There are too many commercials and not enough good shows. The problem with TV...
The problem with TV is that there are too many comercials and not enough good shows.

8.
Children are watching so much TV these days. Teachers are concerned...
Teachers are concerned that children are watching so much TV these days.