【正文】
在浴室里 in the kitchen 在廚房里 cook dinner 煮晚餐 Pick up the phone 接電話 walk down the street 沿街向下走 1. He was sleeping late _______ someone knocked on the door. A. when B. while C. as D. after 2. _______ the police arrived, the alien left the ground. A. When B. Before C. After D. While 3. _______ I was walking to school, I saw a cat climbing a tree. A. When B. While C. Before D. After A B B Ⅰ . 單項(xiàng)選擇 4. What were you doing at this time yesterday? I _______. A. sleep