Combine each pair of sentences, using a relative pronoun (dùng who, whom, whose, that, which) 1. The architect designed these flats. He has moved to HCM City. ............................................................................................................ 2.The girl is very kind. Her parents work with me. ................................................................................... 3.I’m reading the book. I bought it in 1996 ........................................................................ 4.The boys are interested in the game. It is a popular game all over the world ................................................................................................................................