giúp mình với nha, cảm ơn nhiều lắm luôn Reduce these following relative clause using to-infinitive or participle. 27. The next question which we will consider is the crucial one. 28. This is the best book which you can read on a long flight. 29. He is not a person who will let little things disturb. 30. Yuri Gagarin became the first man that traveled in space . 31. She has no one who can help her. 32. The best place where you should put the piano is in the living room. 33. We stood on the bridge which connects the two halves of the building. 34. I ran through the crowd of people who were hurrying to get to work. 35. The trees that were blown down in last night’s storm have been moved off the road. 36. I come from a city which is located in the southern part of the country. 37. Much of this region, which was once covered by forest, is now bare of trees. 38. An agreement has been signed to protect the forests which are being cut down all over the world. 39. People who listen to very loud music may suffer gradual hearing loss. 40. The vegetables which are sold in this supermarket are grown without chemicals.