The Nuclear Security Summit is an initiative of Mr. Obama, considers nuclear terrorism to be one of the greatest threats to international security.
_____ as a candidate for the post of school principal, one must have at least ten years of teaching experience.
Technology has made the delivery of information less difficult, thus _____ information available to more people.
The man in the corner confessed to _____ a lie to the manager of the company.
I don't mind _____ the decision as long as it is not too late.
They used what they had _____ for their daughter.