Complete the following sentences with the appropriate forms of the nouns given. The mother looked on in _________ at her child’s sufferings. (agony) Mary went through _________ finishing her exam paper. (agony) His method of teaching is based on _________. (experience) Mr. Fordham had some curious and novel _________. (experience) Genius displays itself even in _________. (youth) That day she met Dave, _________ of about twenty years old. (youth) My children are _________ to me. (great, help) The boy had _________ of mathematics. (good, knowledge) Her hair is black. Whenever she finds _________ she pulls it out. (gray, hair) He is looking for _________. (work)