2. … means that no matter how a substance is changed, what it is made up of it will always stay the same.

your trousers are in the wardrobe

where are his scissors

there is a lecture on history today

the shopping is heave

where are my gloves

this information is correct

his hair is brown

my socks are in the drawer

our furniture is very cheap

his accommondation is luxurious

evidence is needed before the trial can continue

the news are very exciting

mumps are a common illness among children

my glasses are on the table

chinese is difficult to learn

where are the kitchen scales

billiards is a popular game

his work is very interesting

people are starving in some countries

education is the key to his success

Отличное сочинение! Но есть некоторые недочеты. Я бы сказала так :
When I ASK my mother would she like to work in another place, for example desk job, she answers no. (либо when i askEDshe answerED)
Mom said she loves her job, especially bake sweets. В этом предложении тоже надо выбрать одно время, я бы сказала так: Mom SAYS, she loves her job, especially TO bake sweets
И последнее - So at home I always plenty of goodies. Тут пропущен глагол, я бы сказала так: So at home I always HAVE plenty of goodies.