Which sentence uses an adverb clause and is punctuated correctly?

nevermind for nothing
a. he promised he would give her his present when the christmas dance was over b. after the christmas dance he promised he would give her his present

c. it was not until the christmas dance was over that he would give her his gift.

the right answer is option C.

Explanation:

in option A. it does not start with an upper case. thus it is not right.

in option B. there is a coma missing after 'Dance'. and also the meaning of the sentence turns out to be that he promised that he would give the gift after the dance not that he gave the gift after the dance. I guess this is not right too.

in option C. I don't find any mistake

nobody can answer this if you dont show us the shapes

hygelac - beowulf's uncle, king of the geats, and husband of hygd. hygelac heartily welcomes beowulf back from denmark. hygd - hygelac's wife, the young, beautiful, and intelligent queen of the geats. hygd is contrasted with queen hope this