The sentence "was being contained" is correct and usable in written English.
You can use it when you need to refer to the action of someone or something being held back or restrained, such as the containment of a wildfire. For example, "The firefighters had to work quickly as the wildfire was being contained."
Petrobras said that the P-7 spill was being contained and that there were no injuries.
A bigger question is whether that program was being contained by the work of United Nations weapons inspectors.
Mr. Brooks overlooks the fact that Saddam Hussein was being contained through the use of no-fly zones and economic sanctions.
Courtesy of the trillion euros in cheap three-year loans that the European Central Bank has showered on EU banks in two months, leaders appeared confident that the Greek debt crisis was being contained.
Even so, Mr. Nicholaw said, "The Book of Mormon" was being contained in "a nice musical-theater package" whose structure parallels classic productions like "West Side Story" and "The Music Man".
State and federal officials opted for the program, to vaccinate 5,800 students and faculty members rather than the entire community, after a nerve-racking watch for fresh cases suggested that the problem was being contained and, even in a worst-case scenario, most likely limited to the high schools.
"Obviously we take reports of double-voting very seriously, and we will be reviewing ballots," the statement said, though the official went on to say "not the entire place was in chaos" and that it was was "contained".
This result suggested that bioactive peptide(s) with cytotoxic activity on the cancer cells was (were) contained in walnut residual protein, and was (were) released during papain hydrolysis.
The company's management says its losses are being contained.
"The decline is being contained," said Ulysses Yannas, an analyst at Buckman, Buckman & Reid.
As recent events show, neither Islamic State nor refugees are being contained within the region.
