The plural form of "elf" is "elves".
I say true since it says they "have a better chance at being successful" instead of a definite chance.
Answer:
He might write a book/ is writing a book (is or be writing ?)
4/ He might he have writen this book (writen or wrote ?) / he might he has been writing when...
5/ It may rain/ it may be raining/ it may have rain / it may has been raining
Explanation:
The correct answer should be C and once I get my answers back I will give you the rest