- Cây công nghiệp được trồng trong các đồn điền thuộc các công ty tư bản nước ngoài theo hướng chuyên môn hóa, nhằm mục đích xuất khẩu.

- Cây lương thực được trồng theo hình thúc canh tác luong rẫy, kĩ thuật lạc hậu, thiếu phân bón.

Cho bt x và y là hai đại lượng tỉ lệ nghịch vs nhau và khi x= 3 thì y = \(\dfrac{16}{3}\).t Tìm hệ số tỉ lệ và tính giá trị của y khi x = 4.

Ex 2: Dựa vào những từ cho sẵn, hãy viết thành câu hoàn chỉnh:

1. How far /it/ your company/ where you live? It/ about/ 10/ kilometre.

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2. How far/ it/ Jane’s apartment/ her school?

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3. My father and I/ not/ use to/ spend/ time/ with/ each other.

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4. This man/ use to/ be/ famous/ actor?

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5. There/ not/ use to/ be/ many vehicles/ in the streets/ when/ I/ be/ young.

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6. My family/ use to/ go sailing/ every/ weekend/ but/ now/ we/ not.

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7. Her mother/ use to/ kiss/ hug/ her/ when/ she/ be/ kid.

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8. Mrs Smith/ not/ use to/ do/ morning exercises/ but/ now/ she/ do/ regularly.

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Ex5: Write sentences, using the prompts and then correct form of used to.

1. We/ live in a flat when I was a child.

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2. People/ not have/ mobile phones 20 years ago.

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3. Jim/ go/ swimming every weekend?

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4. My father/ smoke/ but he gave up five years ago.

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5. Lily/ not cook/ much, but now she makes dinner every day.

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6. There/ be/ a supermarket on the corner?

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7. People/ not buy/ so much stuff as they do today.

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8. You/ play football or basketball at school?

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9. I/ go/ to bed very late but not anymore!

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10. Which TV programme/ you/ watch/ most/ when you were little?

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Match the questions with the correct answers.