1. His place in history is now _______(稳定的). 
2. He was called Smith Minor to _______ (区别)him from the other Smiths. 
3. We had never had any _______ (教导) in literary matters at school. 
4. “When I am above the world, I shall _______ (不理,不管) all businesses, ” said Birkin. 
5. It is evident that this _______ (假设) simplifies the problem at hand to a great extent.