题目内容

One of the important lessons children learn from their parents is  ________
A.how speaking politely to others
B.how to speak politely to others
C.what time speaking politely to others
D.what time to speak politely to others
B

试题分析:句意为:孩子们向父母学习的重要一课是怎样有礼貌地和他人说话。根据语境,这是疑问词与动词不定式连用,how表示方式方法。故选B。
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