All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.

It was the building of the rail network from the west to the east coast ________ brought even larger numbers to California in the 1860s.

_______ from the top of the mountain, we found the city more beautiful.

Do you know the stages every inventor must ________ before they can have their invention________ .

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.

— “ The music is too loud. Could you please turn down the radio a bit?”

— __________________