EXERCISE 6 CALL SOME PAIRS TO ANSWERI’M GOING TO WATCH T.VLISTEN AND C...

2/ - GIAO AN ANH 7VAN THEO 961 2COT
GIAO AN ANH 7VAN THEO 961 2COT
2/5/2009 : 6D, 6C, 6G period 99 : UNIT 16 : MAN AND THE ENVIRONMENT Lesson 4 : B – pollution (4,5)