单选题
19.
As Commander-in-chief of the armed forces, I have directed that all measures______for our defense.
A、
be taken
B、
would be taken
C、
to be taken
D、
had been taken
【正确答案】
A
【答案解析】
题干中的direct要求其后的宾语从句用虚拟语气，其谓语部分用“should+动词原形”。题干中从句的主语是measures，故谓语部分应该用被动语态。
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