all the required papers, he didn’t answer the questions fluently in class．

When ____ to danger and conflict, men tend to increase blood pressure, ______ nervous and  anxious.

I'll have all of the readings ______ by the end of this term if my plan goes well．

Long ago, man used to ______ with his hands but now man is used to ______ with machines, and sometimes a robot is used to ___ instead of people.

Mr Smith, _____ of the _____ speech, started to read a novel. 

Unless ___ to speak, you should remain silent at the conference.

—The plan _______for the trip is very important.
—I see, and he is sure to work it out on time.

When he came back three hours later, they were still ____on the sofa, _____ in conversation.

      from the top of the tower, you can get a better view of the city.

He has done so many things, so he certainly deserves _______ to prison.