Mike MC
Member
- Joined
- Dec 23, 2016
- Member Type
- Interested in Language
- Native Language
- Thai
- Home Country
- Thailand
- Current Location
- Thailand
They spent _____ of dollars to help save endangered animals in the region.
a. hundreds of millions
b. a hundred of millions
c. hundreds of million
d. hundred of millions
I know a is more common, but I wonder if there's anything wrong with the other options.