Rewrite the sentences without changing their meanings

This is the coldest winter — This is by far the coldest winter.

1. My house is the biggest one in our neighborhood. [ ].
2. This is the smallest toy I've ever seen. [ ].
3. Your horse ran the fastest of any horse in the race. [ ].
4. That old lady is the oldest of them. [ ].
5. Susan's bag is the most expensive of all. [ ].
6. My dog is lazy, but my brother's dog is the laziest dog in the world. [ ].