Problem: How does the sentence end?

Jane had bushes and flowers. The bushes were very strong so Jane was confident that they would stand the storm, but the 
Answer: flowers were fragile so they might not.

Problem: How does the sentence end?

The excavator was abandoned and they brought in a crane to build the house, because the 
Answer: excavator proved useless to the process.

Problem: How does the sentence end?

He stayed in the living room while sick, and avoided the bedroom, because the 
Answer: bedroom was farthest from the bathroom.

Problem: How does the sentence end?

Jack passed on the apples and bought the grapes instead because the 
Answer:
grapes  cost much less.