Problem: How does the sentence end?

Jeffrey sat at the bar and was served beer by Leslie until 2:00 AM when when the bar closed; 
OPTIONS:
- Jeffrey was grateful for the beer.
- Leslie was grateful for the beer.
Answer: Jeffrey was grateful for the beer.

Problem: How does the sentence end?

The helmet will not fit on the head of the teenager because the 
OPTIONS:
- head is extremely tapered.
- helmet is extremely tapered.
Answer: helmet is extremely tapered.

Problem: How does the sentence end?

The gemstone that he found on the mountain top was better than the stone because the 
OPTIONS:
- gemstone was rare.
- stone was rare.
Answer: gemstone was rare.

Problem: How does the sentence end?

The emergency alarm rang and so I could hardly hear the phone because the 
OPTIONS:
- alarm was too faint.
- phone was too faint.
Answer:
phone was too faint.