Problem: If "It is not easy to space buttonholes exactly the same distance apart, and it is very difficult to cut them precisely the right size. The tiniest slip of the scissors will make the hole too large, and even one thread uncut will leave it too small.", is "Even one thread uncut will leave the hole too small." correct?

Answer: yes


Problem: If "Sam and Amy are passionately in love, but Amy's parents are unhappy about it, because they are fifteen.", is "Amy's parents are fifteen." correct?

Answer: no


Problem: If "It is not easy to space buttonholes exactly the same distance apart, and it is very difficult to cut them precisely the right size. The tiniest slip of the scissors will make the hole too large, and even one thread uncut will leave it too small.", is "Even one thread uncut will leave the right size too small." correct?

Answer:
no