单选题
The policeman declared that the blow on the victim's head ______ from behind.
A、
should have been made
B、
must have been made
C、
would have been made
D、
ought to have been made
【正确答案】
B
【答案解析】
[解析] 本题考查情态动词。分析题干可知，警察在对被害人的死因进行推测，而[A]、[C]、[D]三个选项均表示虚拟，不表示推测，故排除。情态动词must+have done，用于肯定句中，表示对过去某事的肯定推测，符合题意，故答案为[B]。
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