purpose
prime
consist
amount
assess
certain
obvious
mention
introduce
accept
common
ensure
disappointed
compare
aid
core
The _____ function of a set of teeth like this was to grab and crush its prey.
Psychologist recorded the sound of laughter and played it back to dogs to _____ their response.
When they talk about St. Petersburg, they always _____ its famous museums.
Let me _____ my friend. His name is John.
Being hit by a lightning is not a _____ problem. Your chance of being struck is 1 in 5,000.
It's _____ that they dislike each other. They never even talk!
Collaboration is one of the _____ skills and should be practiced at schools.
A robot with these skills might also be able to _____ humans - for example, by doing dangerous or difficult jobs.
Identical twins usually feel closer to each other _____d to other brothers and sisters.
A final exam _____s of going into the desert alone for three days with only a few simple tools.
Being lucky is not the only way to _____ your safety during a thunderstorm.
The monkey could not get the banana and looked _____.
Pizarro made a deal with the Inca. He would let Atahuallpa go, but he demanded a huge _____ of gold.
So was Atlantis real or not? Only one thing is _____ : the mystery of the island will be with us for a long time.
The _____ of the Mutual UFO Network is to research UFO sightings.
Some experts examined the postcard carefully. They finally _____ed that the real Anne Frank had written it.