You could do something like this:
NARRATOR
Have you read this chapter before?
choice
“Yes” {
NARRATOR
Do you want to skip the chapter?
choice
“Yes, skip” {
goto end_chapter
}“No, I want to re-read” {
goto start_chapter
}
}“No” continue
label start_chapter
NARRATOR
Enjoy!
.
.
Chapter goes here
.
.
label end_chapter
NARRATOR
To be continued…