Student A

1. The first one was invented in 1827.

2. 500 billion of them were used every year.

3. The inventor died without recognizing for his invention.

4. They were usually sold in a book or a box.

5. People who collect them were called phillumenists.

6. The early ones was known as "lucifers".

7. They should not be given to children to play with.

8. They can be used as toothpicks.

Answer: Matchsticks (Que diêm)

Student B

1. They were first produced in the 1890s.

2. They were usually made of metal or plastic.

3. Their basic desgin were never improved.

4. They worn by Norwegians in World War II as a symbol as unity.

5. They were known as "gems" in Swedish.

6. Only 1 in 10 were used for its intended purpose.

7. They can be unfolded and used to reset computerized devices.

8. They are supposed to used to hold papers together.

Answer: Paperclip (Cái kẹp giấy)

câu nào không hiểu bạn có thể hỏi mình nhé 

student a

1. was invented

2. are used

3. being recognized

4. are usually sold

5. called

6. were known

7. be given

8. be used

student b

1. were first produced

2. are usually made

3. have never been improved 

4.were worn

5. are known 

6. is used

7. be unfolded/ be used 

8. to be used