答案：B

题目分析：此题考查四个说的区别。speak讲语言 speak to sb about sth ，tell告诉 tell sb sth/tell sth to sb ，say说 say sth to sb ，talk交谈,聊天 talk to sb/talk sb about sth ，根据语境可知选择B。

点评：对相近的单词要熟练掌握他们的区别。