The fear in her eyes told him that he would have to come up with a proper answer.

The question has been asked in English, but no proper answer exists.

When you say something the girl knows the proper answer.

If he'd give me time I might find a proper answer.

He struggled for a moment to find a proper answer.

Maybe there was no proper answer to this type of question.

When the question has been stressed she doesn't give a proper answer.

Actually, the proper answer to "How long did it take you to write your book?"

We need to be able to go back with a proper answer.

I would also like a proper answer to the first question since it is crucial for us.