The phrase "expressed certainty that" is grammatically correct and can be used in written English.
It is commonly used to convey assurance or confidence in what is being stated. Example: The scientist expressed certainty that their theory was correct after years of research and experimentation.
Biden expressed certainty that despite the fracas, Sanders supporters would eventually come around to Clinton in a general election.
According to the same survey, 75percentt of Germans polled expressed certainty that prices have been rounded up.
"Putin expressed certainty that Blatter's experience, professionalism and high level of authority will further allow him to spread the geographical reach and popularity of football," he said.
One of his son's advisers expressed certainty that the former president and the Texas governor discussed foreign policy, "because I've caught whispers of it," the adviser said.
Decades ago, in an interview in Vegetarian Times, he expressed certainty that meat eating would fade away by 2010, and that animals would "breathe a sigh of relief".
He expressed certainty that the repairs dealers had begun were the correct solution, and maintained that the computers in the cars were not to blame.
Nonetheless, Mr. Perry expresses certainty that the system has worked well enough to prevent the execution of any innocent people while he has been governor.
Experts express certainty that it is by Michelangelo (1475-1564) because of its strong resemblance to a similar Michelangelo statue from about the same time, in the Church of San Spirito in Florence.
But in his discussions with reporters, Mr. Rumsfeld expressed certainty today that should Pakistan learn of Al Qaeda fighters within its borders, it "would go and find them".
It is a measure of this state's cynicism that many here expressed surprise at the convictions even as they expressed certainty about Mr. Edwards's guilt.
Poles like Mr. Frankowski and his 78-year-old grandfather, Leon, express certainty that the economic juggernaut that is the European Union will overtake the small, slow rhythms of life that Poles have sustained through centuries of war and trauma, often on the most modest of holdings.
