【题目】选词填空。
at, past, down, see, up
1. I’m going ___________ a hill and the altitude becomes higher.
2. I’m going ___________ a hill and the altitude becomes lower.
3. I’m going ___________ a hospital now.
4. I can ___________ you.
5. The train is stopping ___________ the station.
【答案】up down past see at
【解析】
略
