Even a child knows that nodding head means "Yes". But some people would probably【C1】______

Even a child knows that nodding head means "Yes". But some people would probably【C1】______when they first came to India. When they talked to an Indian, he would often shake his head. They might think that the India did not like【C2】______they said, but on the contrary, he was expressing【C3】______. The Indians have a habit of shaking their heads slightly when they talk to【C4】______. It doesn t mean "No" , but "Yes". If a person doesnt【C5】______, it might cause misunderstandings. At one time, a foreign diplomat(外交官)to India told his driver who was an Indian to send him to his office. The driver【C6】______his head. The young diplomat repeated his【C7】______and the driver shook his head again. At last, the【C8】______shouted angrily, " Drive me to my office at once!" The driver also in a quite loud【C9】______, " Yes, sir. " smiling and【C10】______his head at the same time.

【C1】

A．puzzled

B．be puzzled

C．puzzle

D．be puzzling

请帮忙给出正确答案和分析，谢谢！