I spent a lot of time doing my homework.time you your homework.(time前有2格,you前有一格,your前
问题描述：
I spent a lot of time doing my homework.time you your homework.(time前有2格,you前有一格,your前
有2格（划线部分为a lot of,对划线部分提问）
答
How much time do you spend on doing your homework?I spent a lot of timedo 改成didHow much time did you spend on doing your homework?