the zoologists tried to prove was that the photo of the South China Tiger had been staged or technologically dealt with.
The dodo became extinct fairly recently so its DNA is still ________ .
Exactly when the first people arrived in ________ we now know as California, no one really knows.
The patent officer ______ with my file explained to me that a plant variety is not a/an _______ invention as it is a result of adjusting growth scientifically.
The scientist __________ the experiment for half a year, but he _______ yet.
Seeing the picture, I couldn’t resist ______the days_____ we spent together.