30. British scientists said teenagers are programmed to take risks because they enjoy the thrill of dangerous situations________ others.
At last, I should thank Mr. White for the _______ of speaking here and for ensuring me such an attentive audience.
He created a lot of vivid characters in his best-selling novels, thus winning the ______ of book-lovers all over the world.
-----How did you think of the job he did last week ? -----Well done. ______.
Great efforts to increase agricultural production must be made if food shortage _____ avoided.
-----Did you have a hard time traveling back home? -----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.