We felt ______ impossible to finish the work without help.
It isn’t like a duck to water to learn a foreign language, so you must study hard.
When westerners go out to dinners, they usually pay for the bill with each other.
If you’re late for class, Mr. Black will keep you out.
If there is not any help, we can’t do it.
I don’t think Germany will win the World Cup three years from now.