根据图片提示，用词汇的适当形式完成下列句子。
1. —My sister was a ________ before.
—What did she ________?
—She ________ a bus.
2. My mother was a flute ________.
3. My sister works in an ________.
4. That’s my brother. He ________ ________.
5. —What did he do before?
—He was a doctor. He ________ in a hospital.
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