The difference between telling and saying.

First of all, what should you fill in the sentence you give? First, say, second, say. Exactly.

Tell usually means "tell", but when translated into Chinese, it is sometimes translated into "tell, tell". For example, telling stories, telling jokes, telling lies and telling the truth. How about these? It can be said that they are fixed. It's hard to say why you can't use say. I can only say that most of what I say refers to what someone said directly. If you say a sotry, it means to say the word "story" directly.

Go back to the topic you gave:

65438 +0 is empty. Don't talk to strangers. Can't use tell, which means "tell"; You can't say say, say must be followed by something. You can say something to someone, but you can't omit something and say something to someone; And speak means "speak".

The second one is empty, obviously say. Because the previous sentence has completely quoted mom's words If you remove the preposition to in the second half of the sentence, you can only use tells.