C. Some people might advise you to bring extea batteries...
<span>1. Japan (Pearl Harbour)
2. USA (Europe, Pacific)
3. Soviet Union (Moscow, Berlin)
4 Red China (Mao - Chiang Kai-shek)
5.United Kingdom (Battle of Britain)
6. Nazi Germany (Wernher von Braun, NASA)</span><span>
</span>
Firstly, Conditional past real mood is a statement where one explains what they would have done if some event had occurred, or what could happen, in other words, a theoretical action. The tense will be dependent on the action. Therefore, the only one that fits is C "If I had homework, I would have studied at the library." I properly states their theoretical scenario in which they had homework.
You will need a first sentence with a hook and a thesis statement