1 . Children should be praised for their good b________ , which encourages them to do better. (根据首字母单词拼写)
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2 . Nobody before Jane fully understood chimp________ (行为). (根据汉语提示填空)
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3 . Smoking in public is a bad ______ (行为).(根据汉语提示填空)
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4 . The stupid b________ of one pupil has brought discredit on the whole school. (根据首字母单词拼写)
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