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1. 
____ Scientists are working on trying to bring extinct species back to life.
A.
A few
B.
A little
2. 
____ scientists agree that we need cleaner energy.
A.
All
B.
All of
3. 
I tried three methods, but _____ of them worked.
A.
either
B.
neither
4. 
_____ scientists received an award.
A.
Each of the
B.
Every
5. 
The project has not gone well, and there is now ____ chance that it will succeed.
A.
little
B.
a little
6. 
They produced two cloned animals, but ____ one lived very long.
A.
neither
B.
either
7. 
_____ new discovery takes us one step closer to a cure for the disease.
A.
All of the
B.
Every
8. 
Solar energy doesn't cause any pollution, and wind power doesn't ____
A.
either
B.
neither
9. 
_____ whales nor dolphins can survive for long outside water.
A.
Neither
B.
Either
10. 
Scientists are making new discoveries about the power of the human brain ___ day.
A.
each of
B.
every
11. 
There are two budget teams and ____ them has its own budget.
A.
each of
B.
either
12. 
He's invented a lot of things, but ____ them have been very succesful.
A.
neither
B.
none of
13. 
Dr. Samson doesn't believe people will ever live on Mars, and I don't
A.
either
B.
neither
14. 
_____ people involved in the project were dissapointed when it ended.
A.
All of the
B.
Each of