To speak факт речи употребляется, когда мы указываем язык, на котором говорим если человек произносит речь, выступает на собрании The President refused to speak to the waiting journalists How many languages do you speak?
To talk To speak = «разговаривать», «обсуждать» We talked on the phone for over an hour
To say сказать для введения прямой речи Did he say that? Не says he wants to come with us.
To tell рассказывать передавать информацию сообщать что-либо He told the news to everybody he saw
I don't want to ___________ about this. ________ her that I’m coming tomorrow. What did you __________ to her? I __________ my mum that I planned to come home for Christmas. We have to ___________ that we plan to launch the new product this week. We have to ____________ them that we plan to lunch the new product this week. What did your boss _________ to you about. We __________ about a lot of different topics. Why didn't you ___________ me?