1: "Iron Man 4 is happening! Find out the real reason why Tony Stark is coming back to the big screen."

2: "Fans are thrilled to see their favorite superhero return in Iron Man 4. What's in store for Tony Stark?"

3: "Get ready for the ultimate comeback as Tony Stark suits up once again in Iron Man 4."

4: "The real reason behind Tony Stark's return in Iron Man 4 will leave fans in awe."

5: "Excitement is building as the true story unfolds in Iron Man 4. Don't miss out!"

6: "Iron Man 4 promises to bring back the legend of Tony Stark in an epic way."

7: "Witness the unexpected twist that brings Tony Stark back to action in Iron Man 4."

8: "Unlock the mystery behind Tony Stark's return in Iron Man 4. The wait is almost over!"

9: "Stay tuned for the highly anticipated Iron Man 4, where Tony Stark's legacy lives on."