阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。Whenmeetingpeopleat...
问题详情：阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。Whenmeetingpeopleattheairport,mostpeoplesmileandshakehandswithpeopletheymeet.Weknowthatasmileisusuallyasignthatpeoplefeelfriend...
问题详情：阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。Whenmeetingpeopleattheairport,mostpeoplesmileandshakehandswithpeopletheymeet.Weknowthatasmileisusuallyasignthatpeoplefeelfriend...