Young people go to college with the expectation that ____________ educated people get a higher pay.

Our research has focused on a drug which is so _____ as to be able to change brain chemistry. 

We were pretty _____ when we learned the _______ fact that an elephant would come to live in our school.

“Cell phone” is a     American usage，but British speakers always use “mobile phone”．

Philosophical problems arise when people ask questions that, though very        , have certain characteristics in common.