Problem: How does the sentence end?

Bobby's scoop of chocolate ice cream fell from the cone onto the sidewalk because the 
Answer: cone was too small.

Problem: How does the sentence end?

The team lacked motivation for the warmup, but had plenty of energy for the practice, as they thought the 
Answer: warmup was unimportant.

Problem: How does the sentence end?

The driveway had a lot of cracks but the sidewalk was very smooth. The 
Answer: sidewalk was seamless.

Problem: How does the sentence end?

Frying the pickles was a lot more simple for Mike than the onion rings, so the 
Answer:
onion rings were annoying him.