用所给动词的适当形式填空。
1. He _____________ (spend) all day on his hometown last Saturday.
2. His mother _____________ (take) him to a hospital four days ago.
3. I _____________ (see) Mary on my way home last Monday.
4. Once upon a time there _____________ (live) an old fisherman named Li Yu.
5. Mr Fang _____________ (teach) Chinese when we _____________ (be) in primary school.
