单选题
2.
The mad man was put in the soft-padded cell lest he______himself.
A、
injure
B、
had injured
C、
injured
D、
would injure
【正确答案】
A
【答案解析】
由lest引导的从句用虚拟语气,其谓语部分用“should+动词原形”。
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