Sentence examples for back up with proof from inspiring English sources
Only state facts you can back up with proof.
The public will be invited to submit information, but this will have to be backed up with proof and verified.
Theories have suggested this as a likely reason for cats to first "domesticate themselves", but they have never before been backed up with proof.
"If you want to be believed, back it up with proof," he writes.
He also says she needs to back her claims up with proof, like saying she never cheated on him.
Back your suspicions up with proof and other witnesses.
Most of the questions have arisen from a single account of abuse allegations - given by a single writer about people not identified by real names, backed up with no official documentation as supporting proof, and put out on the Internet in early 2004 after the author was unable to get the story published anywhere else.
But the agency has insisted that Iran back up its denials with proof.
