Her face stiffened. 
Her facial muscles got stiff.
Her face relaxed.
A human measures.
This isn't good because it might have a bad impact on the economy.
They are exploring the applicability to case study evaluations outside of settings, for example GAO.
You may learn to sail in the Algarve.
during his time there, he was somewhat successful with them, but not entirely
The perception indicates efficacy is very good.