问题描述：
When a teacher_____question and does not……
When a teacher_____question and does not name a particular student to_____it,who knows the answer,he or she should put up the hand to answer it
a.asks b.ask c.tells d.tell
a.ask b.answer c.stop d.start
When a teacher_____question and does not name a particular student to_____it,who knows the answer,he or she should put up the hand to answer it
a.asks b.ask c.tells d.tell
a.ask b.answer c.stop d.start
问题解答：
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