Các anh chị giải giúp em bài này nhaaa Bài 1 : Complete the sentences , using the words and phrases given . You can add some words and make changes 1. The major cause / water pollution / Vietnam / be the weakness wastewater management. 2. Many factories / use fresh water / carry away waste / their plants / canals , rives , and lakes. 3. Most / them / not have a wastewater treatment system. 4. Industrial waste water / be directly discharged /canals , lakes , ponds /rivers , causing serious pollution / surface water . 5. For example , / 2008, Vedan factory , a sodium glutamate , relased their untreated industrial wastewater / the Thi Vai River / caused tons / fish and ducks in the river / die. 6. Another cause / water pollution in Vietnam / be the lack / awareness among citizens. 7. Every day people / generate a / of garbage ,/ they throw it directly into canals , river ,/ ponds. 8. They / collect water from these sources /do their laundry , wash dishes , and bathe ,/ then they / throw the dirty water that contain detergent / shampoo directly into them .