【推荐1】Complete the following sentences as required（根据所给要求，完成下列句子）：
1. I paid a lot of money for that car. （改为否定句）
I ________ ________ much money for that car.
2. They publish their school newspaper once a month. （对划线部分提问）
________ ________ do they publish their school newspaper?
3. Mrs. White told Tom that he mustn’t throw paper on the ground. （改为简单句）
Mrs. White told Tom ________ ________ throw paper on the ground.
4. summer, the, to swim, is, in, fun, it, sea, in （连词成句）
________________________________________________________________.

【推荐2】为什么他很悲伤？
Why ________?

【推荐3】She can keep the books for two weeks.（对划线部分提问）
________ ________can she keep the books?