we can not figure out ____quit a number of insects ,birds ,and animals are dying out .
It hasn’t been ______ that food from cloned animals is really safe for humans to eat.
We wanted to purchase the house, but couldn’t ________ the money.
The audience _______ as they waited for the comedian to come on the stage.
_______ the costume and ________ in the wing, the comedian moved his lips as if repeating the lines.
One reason ______ Billy Crystal is popular with all age groups is _______ he is quick thinking and has the ability to amuse the audience.