1.) Even though we waited too long, we can still enter the contest.
Answer: S
2.) Although I have never seen a ballet on stage.
Answer: CF
3.) When did the little girl start to cry and throw a tantrum?
Answer: S
4.) Before George Washington crossed the Delaware
Answer: CF
5.) You closed your eyes when you made the wish.
Answer: S
Explanation: S means complete sentences and CF means that there is a missing verb or fragment like the "who and the what". In the directions it wants you to put those labels according to the sentences given.
For example:
Incorrect: Although I have never seen a ballet on stage.
Its missing the "what".
Correct examples:
Example 1: Although I have never seen a ballet on stage, I have seen an clown.
Example 2: Although I have never seen a ballet on stage, my friend has.
(I am bad at explaining so I hope you understand what I'm trying to explain and I hope this helped you out!)