Public service ads, also PSAs, often _________ for free, _________ to educate people about health, safety or any other problem that affects public welfare.
She was so angry at all ______ I was doing ______ she walked out.
He old woman had a letter from her son in the army_____ to her.
It was ______ the old clock that the old man spent the whole morning at home.
The joke told by Tom made us______, so our maths teacher couldn’t make himself______.
— Jenny looks hot and dry.— So______ you if you had a high fever.