Add punctuation: Accordingly she chairs the monthly meeting of the Foreign Affairs Council comprising the EUs 28 Foreign Ministers
A: Accordingly, she chairs the monthly meeting of the Foreign Affairs Council (comprising the EU's 28 Foreign Ministers).

Add punctuation: but into the second the high priest only once a year not without blood which he offers for himself and for the errors of the people
A: but into the second, the high priest only, once a year, not without blood, which he offers for himself and for the errors of the people:

Add punctuation: People who do not use contraceptives can spread sexually transmitted diseases such as HIV it can be an increase of several sexual disorders
A:
People who do not use contraceptives can spread sexually transmitted diseases such as HIV, it can be an increase of several sexual disorders.