question: however, if you do earn all or nearly all your income in the country where you work, that country is obliged under eu law to give you the tax allowances that are available to its residents.
Capitalize this past sentence correctly.
A: However, if you do earn all or nearly all your income in the country where you work, that country is obliged under EU law to give you the tax allowances that are available to its residents.

question: the arena model – the media form an arena for different perceptions of risk that are debated in an open forum between all players. there is room here for broader messages.
Capitalize this past sentence correctly.
A: The arena model – the media form an arena for different perceptions of risk that are debated in an open forum between all players. There is room here for broader messages.

question: a number of clinical studies have also confirmed this theory, showing that buyers would not need to be concerned about long term health problems with extended application of the product.
Capitalize this past sentence correctly.
A: A number of clinical studies have also confirmed this theory, showing that buyers would not need to be concerned about long term health problems with extended application of the product.