根据句意、首字母和汉语意思完成单词。 1. When you a______ in Beijing, please call me. 2. Your mother is w______ for you at the school gate. 3. When you visit someone, please k______ at the door. 4. I often help my mother w______ the dishes. 5. —Why are you late today? —B______ I get up late.