[Q]: How does the sentence end?

Eating sweets was a big problem for Carrie but not for Rebecca, thats why

[A]: Carrie has a large waistline.

[Q]: How does the sentence end?

Joel is on his final year and asks for help from his lecturer Joseph about doctorate, because

[A]: Joel wants to get a PhD.

[Q]: How does the sentence end?

Kenneth cooked a nice meal of spaghetti for Donald at dinner because

[A]:
Kenneth wants to impress him.