----- Nội dung dịch tự động từ ảnh ----- nbine the sentences in each pair mto a new sentence that shows a causeleffect rela wonds in brackets.( LOpt) Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes ( We can't see the stars at night. There is too much light pollution. (due to) 3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere (so). 4 Houschalds dump wate into the river. It is pelluted. (so) The food is contaminated. People's health is poor. (results ia) 6 Factories release fumes. The air breathe gets polluted. (due to) fsm (+)S + had + V-ed (pp)/ VasQT +0. ()S + had + not + V- ed (ppy Vangr +0. (?) Had +8+V- ed (ppy Vingr +0. eg We had lived in Hfue before 1975. Afler the children had finished their homework, they went to bed. -Before the children wnt to bed, they had finished their homework - Diễu tả một hành độag sảy a và đã hoàn thành trong quả khứ. (- Trang cáu có hai hảnh đồng thì hảnh động xảy na rnớc dùng ở quả khế hoàn thánh cả ! thi qui khá đơn ) 1 The train (stat). 2 By the time he left the house, the house ( collapse) 1. The film already (begin) 4. I (find) my pen afte I (buy )a new one. before we arived at the station. -when we got to the cisema.