rút gọn mđqh
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 Sir Humphry Davy at the end of 1812.
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.
9. All students don't hand in their papers will fail in the exam.
10. I saw many houses that were destroyed by the storm.
11. The street which leads to the school is very wide.
12. The system which is used here is very successful.
13. John, who teaches my son, is my neighbor.
14. Trains which leave from this station take an hour to get to London.
15. The candidates who are sitting for the exam are all from Vietnam.
16. We are driving on the road which was built in 1980.
17. Customers who complain about the service should see the manager.
18. The city which was destroyed during the war has now been rebuilt.
19. My brother, who met you yesterday, works for a big firm.
20. The vegetable which are sold in this shop are grown without chemicals.