Some people believe that teenagers are bad-bred nowadays, whereas some say that it is just slander.

I think that teenagers are quite hard-working and polite nowadays. First of all, they have a lot of lessons at school and then they have to do plenty of homework. It all requires particular qualities like patience, tolerance but not laziness. Second, the standards of politeness and the meaning of politeness have changed these days. Those things that were considered rude 50 years ago are not considered rude anymore.

At the same time, there are people that think teenagers have no respect for seniors. They talk back, they misbehave in public places, and are extremely lazy.

I do not agree with this opinion. One can see such teenagers but it is more the exception, than the rule.Fortunately, people have realized the harmfulness of living without ideals and have turned to traditional and good values.  The teenagers have started changing as well.

In conclusion, I would like to say that one should check and investigate every claim properly before judging teenagers. The teenagers might seem rude and lazy but if you dig deeper into reality, you will see them as polite and well-bred . Thus, I strongly believe that the youth is wonderful.

or

In conclusion, I would like to say there are opposing views on this issue. At first sight modern teens might seem lazy and ill-bred but in actual fact they are really polite and well-bred. Thus, I strongly believe that modern teenagers are wonderful.