1.he often plays football after school(改为一般疑问句并做肯定回答）
2.he was in the library just now(对划线部分提问）（in the library是划线部分）
3.mike played the violin last Sunday （对划线部分提问）（划线部分是played the violin）
4.my cousin birthday is on the fifth of may （对划线部分提问）（划线部分：on the fifth of may）速度点