It has to be a combination!

It means there is not really enough money. They are likely to not have the money to do the work needed.

In the UK, we vary the sides we have with meals a lot. Sometimes we will have pasta, sometimes rice, sometimes bread or potatoes. However, bread is more common for lunch and rice, pasta or potatoes for dinner. :)

I’m good at sports is more natural :)

Try lots of different ways of learning. Try TV, movies, conversation practice, writing practice or even look for unique lessons. For example, I offer English lessons via a messaging app instead of face to face :)

Your second option is correct :)

Your first option is correct :)

This is not correct. It is much better to say I still feel 18.