He was so unsure of himself that he ______ even buy a box of chocolates without consulting his mother.
Answer of this question is below Quiz. Test yourself and see your English Level.
Grammar, 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, B1 - Intermediate