Finally, a word about the acid test in all of this.

They say the program has failed the acid test of science.

"The acid test for us will be how well our students are doing in the classroom."

"The acid test is to talk to consumers and find out what they think."

In brief, a real acid test is yet to come.

This will be the acid test of an effective European common foreign and security policy.

An acid test, considering what last happened between us two.

Well, does that represent some kind of acid test to the Church?

The acid test is whether Presidents gave more than they got.

Today this is the acid test for the present and future construction of Europe.

It's a severe test, for two people to be just on their own.

The rail was one that had been built to stand a severe test.

Now the President's policy of reconciliation is under its most severe test.

But I think we will be put to a severe test before long.

"And so we put our friends, the countries working with us, to a severe test."

At a young age I was put to a severe test.

Your wound may seem closed, but if you were put to some severe test this might not hold.

Those who played well knew they had passed a severe test.

At the moment this ability was being put to a severe test.

"Even though I were to put your trust to a more severe test than before?"