7. After spending several hours trying to save the man's infected leg, the doctor decided that they had no choice but to ______. (A) substitute (B) investigate (C) surrogate (D) amputate

14. A(n) ______ phone call helped police find the body of a man missing for months, leading to the arrest of a suspect in a case involving a cash dispute. Though the murder case was solved, the police did not know who tipped them off and helped them find the victim's body. (A) arrogant (B) incidental (C) unprecedented (D) anonymous

7. After spending several hours trying to save the man's infected leg, the doctor decided that they had no choice but to ______.
(A) substitute
(B) investigate
(C) surrogate
(D) amputate

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