sentence: She was running out of time to get the mess in her room cleaned because the  OPTIONS:
- mess was short.
- time was short.
complete: time was short.

sentence: The students don't like the methods that are taught compared to other techniques, because the  OPTIONS:
- methods are more difficult.
- techniques are more difficult.
complete: methods are more difficult.

sentence: Nelson has recently separated from his best friend Brett and is trying to forget him, because  OPTIONS:
- Nelson misses him.
- Brett misses him.
complete:
Nelson misses him.