[Q]: How does the sentence end?

William knew pregnancy much better than Derrick , so 

[A]: William made sure to be present for the birth.


[Q]: How does the sentence end?

Ian ate a lot of turkey breast but not Kevin because 

[A]: Kevin was on a vegetarian diet.


[Q]: How does the sentence end?

The photographer was preparing to take pictures for multiple weddings and replaced the camera but not the lens because the 

[A]:
camera was broken.