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IV. Choose and underline the correct word
1. My sister knitted a sweater who/which she is wearing now. 2. A doctor is someone whose/who helps treat sick people. 3. This is the park which/where people come to play chess. 4. 2004 was the year when/where we visited London. 5. Oh! Is she the person whose/which house is for sale?

1. which

2. who

3. where

4. when

5. whose