sentence: Brett didn't understand how Nelson was able to train his bulldog so quickly, but OPTIONS:
- Brett didn't understand how many hours of work it had actually taken.
- Nelson didn't understand how many hours of work it had actually taken.
complete: Brett didn't understand how many hours of work it had actually taken.

sentence: Even with a massage, the shoulder was still sore, while the arm was fine. The OPTIONS:
- shoulder had been rested.
- arm had been rested.
complete: arm had been rested.

sentence: The musician wanted to store the guitar in the case but the OPTIONS:
- case was too large.
- guitar was too large.
complete:
guitar was too large.