If the researchers are successful, they an important step in reproducing the way that humans use cognition(认识力)to interact(交流;互动)in their world.
Don’t you think this shirt is too tight ________ the shoulders?
As their memories decline, some old people tend to be talkative because they ______ forget what has just been said.
Meals in Spain are quite different from ____ they have in China.
The ________ look on her face suggested that she _________ her manager’s idea.