要求：选择合适的词补全句子。old, older, elder,oldest, eldest1. Hisgrandpa is a white-haired ­­­­____ man.2. He wasabandoned by his father when he was three months____.3. In the ____days we got a visit from the vet maybe once a year.4. Tom istwo years ____ than I.5. I am the____ among my cousins.6. It's the­­­­____ building I have ever seen.7. The ____son inherited the bulk of the estate.8. The ____one is better.