A casual, friendly way to introduce a topic you want to discuss or bring up a suggestion.
“Hey, I've been thinking about the two apartments, and I have a clear favorite.”
“Hey, I've been thinking about our vacation options, and I really think we should go with the beach resort.”
Task 5 is framed as a conversation with a friend, so opening with a warm, informal expression like this immediately sets the right conversational tone and eases you into your response. Use it as your very first line to sound natural, then move quickly into stating your opinion so you don't waste speaking time.
Synonyms: so, I've been considering, listen, I was just thinking, I wanted to mention