根据句意和汉语提示填写单词, 使句子完整通顺.

1. The children _____ (亲吻) their grandma good night.

2. She stood up and _____ (向······打招呼) me with a happy smile.

3. His attitude _____ (对于) me has changed.

4. The president _____ (摇动) hands with the old lady and smiled.

5. They _____ (鞠躬) politely before the king.

6. China which is our mother _____ (国土) is one of the largest countries in the world.

7. We _____ (到达) home late last night.

工作零线断开会造成三相电压不平衡，不会烧坏三相电气设备。