I believe it is true.
The definition of theme, “the subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic.”
Debut is the answer because the definition of debut means to introduce first or appear first.
Answer:
I have written a story so far.
she has visited London before.
we will finish the project.
Jane has traveled Turkey before.
Amy has already cleaned her room.
I hope you understood!!
No not really but technically they might not have been able to trust him