What is the noun of ´polite´?
politeness
Is this sentence correct? I do think that you need to work harder if you want to pass the exam.
Yes - it uses the emphatic present simple
What is the opposite of polite?
impolite / rude
He ______________ (have) a red sports car.
has
What is the noun of generous? How do you spell it?
generosity - must be spelt correctly.
Someone you can trust and rely on is ...
dependable / reliable / trustworthy
Someone who gives a lot of their time, money or resources to others is ...
generous
What is the noun of reliable? How do you spell it?
reliability - must be spelt correctly.
I _____________________ (love) your new outfit.
love
Is this sentence correct? The number of people with COVID-19 increases.
No. We use present continuous for changing situations (The number of people with COVID-19 is increasing).
The woman in the picture ________________ (taste) some wine.
is tasting
She ___________________ (have) a shower at the moment.
is having
I _________________ (understand) what you're saying.
understand
The soup ____________________ (taste) amazing!
tastes
Is this sentence correct? All of my family lives in Spain.
Yes
Is this sentence correct? Every students at my school are on social media and use it every day.
No. We use 'every´ with singular nouns.