Problem: How does the sentence end?

James wanted to carry the log for support but he picked up a rod instead because the 
Answer: log is heavy.

Problem: How does the sentence end?

To heal properly, the bandage had to be removed from the cut and replaced with ointment, as the 
Answer: bandage was ineffective in curing the infection.

Problem: How does the sentence end?

Emily was always lagging  Jennifer in the math competition, as 
Answer: Jennifer had a math tutor .

Problem: How does the sentence end?

The kitchen floor was shinier than the bathroom floor because the 
Answer:
kitchen floor had just been mopped.