Sometimes
we find that politicians, or anyone else, are not telling the truth,
and nothing but the truth, so you use this expression. Read about what
it really means.
The English we speak: It won't wash
(BBC Learning English)
I don't know if happiness is genetic or
not, but something is for sure there are some people that are naturally
more cheerful than others. As well, babies tend to be happier than
adults (probably due to all the problems and concerns that we have in
mind). Another interesting fact is that grandparents also tend to be
happier than parents. It may be due to the fact that they have fewer
responsabilities in life.
Read these related articles and to the listening exercise later, and then give me your opinion about the issue: