Which sentence includes a dependent clause? A. After practicing for many months the drama club was ready to perform the play. B. The students walked down the hallway and into the auditorium. C. The class voted on their favorite project and the winner received an award. D. I will begin writing my essay once I have made an outline

After practicing for many months the drama club was ready to perform the play

yeah! it's really me with my homework, you should try it!

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).