Respuesta :
The correct answers are:
- The man whose house we stayed in is my uncle.
- The guy who sold me my car is a crook.
- Which pen did he give you? The blue one.
- ..., whose ball I found. (Clearly, there is a mistake at the beginning of the sentence but the context helps to identify the correct relative pronoun.)
- His last book, which I didn't read, was very successful.
- I don't know which way to go.
- Which of the Beatle's album is your favourite?
Who, which and whose are relative pronouns.
- Who only refers to people. It is used in 2 because it refers to "The guy"
- Whose refers to people or things. It is used in 1 because it refers to "the man". The "house" belongs to "the man". In sentence 4, "whose" indicates that the "ball" belongs to somebody.
- Which refers to objects and animals. It refers to the "pen" in sentence 3, to "his last book" in sentence 5 and to "the Beatle's album" in 7.