问题
students who killed themselves had only been moreconfident, their deaths ________.
A:need have beenavoided
B:must have been avoided
C:might have beenavoided
D:will have been avoided
B:must have been avoided
C:might have beenavoided
D:will have been avoided
正确答案是：
同类题型
Bob, where will the Olympic Games of 2016 — In Brazil.
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