When I was a child I _____ bite my nails.
Answer of this question is below Quiz. Test yourself and see your English Level.
Grammar, A1 - Elementary, Better, Can, Could, Couldn’t, Don’t have to, Either, Get used to, Had better, Is used to, May, May not, Modals, Must, Mustn’t, Need, Needn’t, Neither, Nor, Ought, Shall, Should, Used to, Will, Would rather