Add punctuation: This is what occurs in the Exodus
A: This is what occurs in the Exodus.

Add punctuation: Cit Group had received aid for about 23 billion dollars from the US government
A: Cit Group had received aid for about 2.3 billion dollars from the U.S. government.

Add punctuation: The HFC network works well in delivering Telstra broadband and Foxtel pay TV services Andy Penn has said with the issues cropping up once NBN began making technology changes to it
A:
The HFC network works well in delivering Telstra broadband and Foxtel pay TV services, Andy Penn has said, with the issues cropping up once NBN began making technology changes to it.