một mảnh đất hình chữ nhật có dài hơn rộng là 3m . Nếu giảm dài 5m và tăng rộng 3m thì diện tích giảm 30m vuông . tính dài rộng lúc đầu

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V)-People are worried about the greenhouse effect. Makes sentences in Conditional sentences type 1 with “If…, … will…”, using the cues given the earth gets warmer the sea gets warmer the ice at the North and South Poles melts the sea level rises there are floods in many parts of the world many people lose their homes 1. If the earth gets warmer, the sea will get warmer. 2. If the sea gets warmer, 3. _________________________________________________________________ 4. _________________________________________________________________ 5. _________________________________________________________________ VI)-Combine each pair of sentences, using conditional sentences type 1. 1. A person looks at the sky at night. He is not able to see the Milky Way by naked eye. _________________________________________________________________ _________________________________________________________________ 2. Noise pollution happens regularly. It causes stress or nuisance. _________________________________________________________________ _________________________________________________________________ 3. Water pollution gets more serious in the future. It affects the development of economy and society. _________________________________________________________________ _________________________________________________________________ 4. Australia has invested in water in Viet Nam with good results. Half of the population in the rural areas has access to fresh water. _________________________________________________________________ _________________________________________________________________ 5. You use compact light bulbs. You save a lot of energy. _________________________________________________________________ _________________________________________________________________ 6. We have more space. We plant more trees. _______________________________________________________________