【题目】It was commanded that the coal mine survivors ____ to the nearest hospital for treatment.
A.must send
B.be sent
C.would be sent
D.should send

【答案】B
【解析】考查含command的主语从句。It is commanded that---后面从句的谓语里面是（should）+动词原形,虚拟结构；从句中的主语和谓语动词之间是被动关系，故选B。