It was Sunday yesterday. The weather was fine. It was sunny and there were no clouds in the sky. Sandy and Sue got up early in the morning. Now they were in the park. It is a big park and it's so beautiful. They saw many people there. Some boys played football on the grass. Some girls danced under the tree. An old man walked beside the lake. A young woman and her little son looked at the fish in the lake. How happy they are!

两个完全相同的物块a、b，在水平面上以相同的初速度从同一位置开始运动，图中a直线表示a物体不受拉力作用、b直线表示b物体受到水平拉力F=1.8N作用的υ﹣t图象，求：

—我通常和我的父母一起吃面条。

—What ____ you do ____ your ____?

—I ____  ____ some  ____  ____ my parents.