7.B 8.D 9.C\r10.D\rLong conversation\rl.B 2.D 3.C 4.A 5,C\rPassage\rl.A 2.C 3.B 4.D 5,A\rRadio program\r1. in 1776\r2. They worked together for the same goal\r3. Fifty years\r4. No ,he was ailing\r5. Yes, they did.\rHomework.\rTask 1\rl.C 2.A 3.B 4.D 5,B\rTask 2\rl.D 2.A 3.A 4.D 5.B\rTask 3\r1.organisms\r2.untreated\r3.occurences\r4.agriculture\r5.encouraged\r6.administrations\r7.attributed\r8.Some thhings have been done to address this problem\r9.in an effort to raise the public's awareness of environmental\rprotection\rlO.to punish enterprises that drain untreated wastes into the\rrivers and oceans