题目：
The possibility of a murder _____, the police have set about looking for the clues to her suicide. [ ]
A. to be excluded
B. to exclude
C. having excluded
D. having been excluded
答案：
答案：D
The possibility of a murder _____, the police have set about looking for the clues to her suicide. [ ]
A. to be excluded
B. to exclude
C. having excluded
D. having been excluded
答案：D
