Barron's TOEFL F

Adjective capable of reproducing
You see here the results of 150 years of work to produce a structurally correct and sound, docile in temperament, fertile in breeding and above all the ultimate beef machine.
Adjective of great strength
Architecture on Antarctica is challenging. Shelter must be formidable enough to insulate inhabitants from unsurvivable weather, yet negligible enough to be taken away without leaving a trace.
Verb promote the growth of
For more than half a century, China has used its pandas to help foster relationships with other countries. Recently, panda loans have coincided with multimillion dollar trade deals for salmon, Land Rover vehicles and uranium.
Adjective affecting or relating to the essential nature of something
Most awful about being here, is to have life and then freedom taken away. The first loss is fundamental, horrible, and irretrievable. The second loss might seem for us now an inconvenience, and trivial, but it is pernicious.