对划线部分进行提问。
1. He played football in the park yesterday.
_______________________ yesterday?
2. There were ten trees in the park last year .
_______________________ in the park last year?
3. She did her homework for two hours last night.
_______________________ her homework last night?
4. She was born in 1975 .
_______________________ born?
5. They watched TV at home yesterday .
_______________________ TV yesterday?
