这些句式你掌握了吗？按要求改写下列句子。
1. My father has been a worker for 15 years.( 就画线部分提问)
_____ _____has your father been a teacher?
2. We bought some mushrooms in that shop.( 改为否定句)
We_____ _____ _____ mushrooms in that shop.
3. He has lived in Beijing for two years.( 改为否定句)
He_____ _____ in Beijing for two years.
4. I wanted to drink milk because I was very thirsty.( 就画线部分提问)
_____ _____you want to drink milk?
5. He has to go home now.( 改为一般疑问句)
_____ he_____to go home now?
6. He needs three bananas when he makes a fruit salad.( 就画线部分提问)
_____ _____ _____does he _____when he makes a fruit salad?