Answer:
The sea has waves. They go up and crash back down. You can think of this as hard times. When you think your doing good and start rising to the top you often crash back down. This (the crash) leads to difficulties or troubled times.
The correct answer is in this case Several
Several is indefinite because it doesn't point to a precise expedition to the polar regions.
It is well-known a short story
We don’t support products that use it since it will go out of stock. Talk to local law makers to make laws to prohibit it.
