THE WATER IS UNPOLLUTED. ……… B. ANSWER THE QUESTIONS. (1M)

3/ - DE THI HK2 THAM KHAO ANH 9 DE THI HKII THAM KHAO NH 20132014
DE THI HK2 THAM KHAO ANH 9 DE THI HKII THAM KHAO NH 20132014
3/ The water is unpolluted. ……… B. Answer the questions. (1m)