Weknowthatasmileisusuallyasignthatpeoplefeelfriendlyan... 国语站 题库 1.23W 大中小设置文字大小 问题详情: We know that a smile is usually a sign that people feel friendly and happy, but _____ we don’t know who the new person is? A. what if B. how come C. what about D. why not【回答】A知识点:固定句型题型:选择题 TAG标签:#