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.  Scientists ________ (分析) samples of leaves taken from the area.  85.  It might be ________ (值得做的) to recall a few important facts. 答案：76. simplify          77. suffered         78. determined           79. pretended             80. reserve 81. addition         82. accumulated  83. raise               84. analysed         85. worthwhile

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