第三节：请用方框内所给短语的适当形式填空。(共10小题；每小题1分，满分10分。15选10)
lose heart; turn to; in ruins; give in; at an end; dig out; ever since; in order to ; come up;make up one’s mind; in search of; belong to; admit..into; take the place of ,debate about
71.I have ________________ to keep away from the Internet bar with the help of my friends.
72.With his impolite words, my patience was ____________, so I left the room immediately.
73.My brother fell off his horse a week ago and has been in bed________.
74.I’ll __________ the main cause of the accident as soon as possible.
75.It’s reported that the twins are __________ one of the most famous universities in the world.
76.Some new buildings ________ the broken ones in earthquake areas, after a year of hard work.
77.The police were examining the woods ________ any useful information connected with the two missing boys.
78.The government officials showed no signs of ___________ to the murderer’s demands.
79.He insisted that the house ___________his daughter, and no one had right to take it away.
80.You are the only person that I can trust. Whenever I have a problem, I have no one but you to ___________for help.