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40. We are moving to Manchester which is in the north - west. 
41. My friend gave me a lot of advice which I think of every night. 
42. The girl to whom I introduced you is John's sister. 
43. Who was the first person to leave the officer yesterday? 
44. People have gathered in front of the Town Hall protesting against pollution. 
45. A tenant is someone renting a room, a house or an apartment. 
46. Mary is always the first to come and the last to go. 
47. Mr. John to whom we sent the letter hasn't given us his reply. 
48. The man whom we're looking for was found dead. 
49. Jenny playing piano very well is a nice friend. 
50. This is the last one to be rescued by the police. 

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