sentence: Joseph spoke German better than Joel because  OPTIONS:
- Joseph had been studying the language for a longer amount of time.
- Joel had been studying the language for a longer amount of time.
complete: Joseph had been studying the language for a longer amount of time.

sentence: The plant was harder to take care of than the tree because the  OPTIONS:
- tree needed more attention.
- plant needed more attention.
complete: plant needed more attention.

sentence: Robert always got worse marks for behavior on report cards than Nick, because  OPTIONS:
- Robert obeyed the teacher's requests.
- Nick obeyed the teacher's requests.
complete:
Nick obeyed the teacher's requests.