If those two people _____ leave, the Whole firm would probably collapse.
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