 Until Sunday, Arcelor ( the world's second-largest steel company ) had firmly rejected world-leader Mittal's bid to take the former company over and form a global steel giant.
<fluency>  Until Sunday, Arcelor ( the world's second-largest steel company ) had firmly rejected world-leader Mittal's bid to take the former company over and form a global steel giant.
 Until Sunday, Arcelor ( the world's second-largest steel company , had firmly rejected world-leader Mittal's bid to take the former company over and form a global steel giant.