By the late 1920s, water quality in the river had significantly deteriorated.

The third point is that the security situation has significantly deteriorated.

It would only happen if a child deteriorated significantly while there.

In the financial year 2008-2009, the overall situation deteriorated significantly.

But again I doubt the situation has significantly deteriorated since 2008.

Security seems to have deteriorated quickly and significantly after the withdrawal.

"The food supply and water situation, therefore, is likely to deteriorate significantly."

"She was the only one who made the observation then, and we don't know whether the patient had deteriorated significantly by that time."

By 1980, economic conditions had deteriorated significantly, which led to general dissatisfaction with the government.

Your parents health appears to deteriorate significantly and unfortunately they die.