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Correct Answer: A) Defining:You have more than one sister.
Correct Answer: A) Who.
Correct Answer: C) Are not essential to the meaning of the sentence.
Correct Answer: B) When.
Correct Answer: C) Which.
Correct Answer: B) Which.
Correct Answer: A) D. is crossed by many canals.
Correct Answer: D) Which.
Correct Answer: B) Whose.
Correct Answer: E) Reusable.
Correct Answer: D) That.
Correct Answer: C) When.
Correct Answer: C) Who.
Correct Answer: A) Whose.
Correct Answer: B) , who graduated from Osaka University.
Correct Answer: B) , which is one of the oldest libraries in Europe,.
Correct Answer: B) Non-Defining.
Correct Answer: A) Whom.
Correct Answer: A) Which many people have written about,.
Correct Answer: A) WHO.
Correct Answer: B) Defining relative clause.
Correct Answer: C) That.
Correct Answer: C) Which. which.