Reduce these following relative clause using to-infinitive or participle. 1. The man who is standing there is a clown. 2. The envelop which lies on the table has no stamp on it. 3. Benzene, which was discovered by Faraday, became the starting point in the manufacture of many dyes, perfumes and explosives. 4. My grandmother, who is old and sick, never goes out of the house. 5. The student don’t know how to do exercise which were given by the teacher yesterday. 6. The diagrams which were made by young Faraday were sent to Davy in 1982. 7. The gentleman who lives next door to me is a well-known orator. 8. All the astronauts who are orbiting the earth in space capsules are weightless. em cảm ơn ạ

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