Problem: How does the sentence end?

She was able to lift all the boxes with books but asked the neighbour to help her with the chairs, because the 
Answer: chairs were heavy.

Problem: How does the sentence end?

Neil had more discipline than Lawrence did so 
Answer: Neil was able to pass all of their classes.

Problem: How does the sentence end?

Cynthia's takes prescription pills, but Monica does not, so 
Answer: Monica is likely to be sober.

Problem: How does the sentence end?

The updates for Mike's cell phone are more reliable than those for his laptop. That's because programmers spend crazy amounts of time on the 
Answer:
cell phone updates.