题目

76.  The plan is too complicated. We will ________ (简化) it. 77.  Having ________(遭受) such heavy pollution, it may be too late to clean up the river. 78.  Tom is working hard because he is ________(坚决的) to pass the exam. 79.  When I came in, the naughty boy ________(假装) to be reading his book. 80.  They wanted to set up a wild animals _________(保护区). 81.  In ________(此外), he learned English by himself. 82.  Over the years , I have ________(积累) hundreds of books. 83.  We need your help to ________(筹集) money for the educational research. 84.  S在△ABC中，设角A、B、C的对边分别为a、b、c，且acosC＋c＝b.(1)求角A的大小；(2)若a＝，b＝4，求边c的大小．