Hãy dùng từ gợi ý viết hoàn chỉnh những câu sau:
1. You / know / who invent / ballpoint pen ?
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2. When / I / primary school / teacher / make / me / write / fountain-pen.
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3. At / time / I / prefer / use / ballpoint pen.
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4. Ballpoint pens / use / to / very expensive / when / first introduce / Viet Nam.
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5. Father / say / ballpoint pen / used / cost / some VND.
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6. Big / French company / make / ballpoint pens / call / Bic.
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7. How many / ballpoint pens / produce / world / each year?
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8. Ballpoint pens / use / widely / than / fountainpens.
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9. It / because / they / cheaper / and / convenient.
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10. It / advisable / that / children / learn / write / not use / ballpoint pens.
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Sap xep tu
1 You/know/who/invent/ballponit pen?
=> Do you know who invented ballpoint pen?
2 WHen/I/primary school/teacher/make/me/wirte/foutanit pen
=> When I was in primary school, the teacher made me write with foutanit pen.
3 How many/ballponit pens/produce/word/each year?
=> How many ballpoint pens are produced by word each year?
4 Ballponitpoint pens/use/widely/than/foutain pens
=> Ballpoint pens are used more widely than foutain pens.
5 It/because/they/cheap/and/convinient
=> It is because they are cheap and convinient.
thanks