题目内容：
回答题Even a child knows that nodding head means "Yes". But some people would probably （56 ）when they first came to India. When they talked to（57）Indian, he would often shake his head. They（58）think that the India did not like（59）they said, but on the contrary, he was expressing（60）
The Indians（61）a habit of shaking their（62）slightly when they talk to（63） It doesn' t mean "No", but "（64）". If a person doesn' t（65）, it might cause misunderstandings.
At one time, a foreign diplomat (外交官)（66）told his driver who was an Indian（67）him to his office. The driver（68）his head. The young diplomat repeated his（69）and the river shook his（70）again. At last, the（71）shouted angrily, "Drive me（72）my office at once!"73driver also in a quite loud（74）, "Yes, sir. "smiling and（75）his head at the same time.
请回答（56）题 A．puzzled
B．be puzzled
C．puzzle
D．be puzzling
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