句型转换。
【小题1】I exercise fifty minutes a week. （对划线部分提问）
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【小题2】Running is exercise. （改为一般疑问句）
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【小题3】Walking is exercise. （改为否定句）
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【小题4】I play sports twice a week.  （对划线部分提问）
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【小题5】school, I, home, after, walk   (.)  （连词成句）
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There are three children at home. (对画线部分提问)
_______ _______ children are there at home?

The map is on the wall.（对画线部分提问）
______ ______ the map?

My grandma was a teacher.（对划线部分提问）
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They eat for twelve hours a day.(对画线部分提问)
______ ______ do they eat a day?