"testify into" is not a correct phrase in written English.
The correct phrase would be "testify about" or "testify regarding." "Testify into" is not grammatically correct and should not be used in written English. Example: The witness was asked to testify about the events leading up to the accident.
The taxpayer group wants Mr. Jospin to testify in an investigation into a regional development agency he led just before coming to power in 1997.
Last week 12 members of the People's Democratic party (HDP) were arrested after refusing to testify in an investigation into alleged terrorism activities.
Some German lawmakers have also called for Mr Snowden to be invited to Berlin to testify in parliamentary inquiry into NSA surveillance.
Spicer also indicated he would be willing to testify in the investigation into Trump's ties to Russia.
Flynn told the FBI and congressional officials that he would be willing to testify in their investigations into Russia's involvement in the elections if he could receive immunity from prosecution, The Wall Street Journal reported on Thursday.
The pornography was allegedly discovered on Bukovsky's laptop shortly before he was due to testify in a public inquiry into Litvinenko's murder in London in 2006.
Fallout from the Enron scandal was evident last September when Merrill dismissed two top executives who refused to testify in a federal investigation into Enron deals.
Baird gamely continued to smile and testify well into the evening, but as Stephanopoulos later wrote, "She didn't know it yet, but she was toast".
Major museums, as any regular museumgoer can testify, have changed into more commercial enterprises in recent years.
The clandestine affair led to this spy chief's sudden resignation on Friday, just a week before he was due to testify at hearings into the death of the US ambassador to Libya in an attack on the consulate in Benghazi.
