单选题
We should put the medicine beyond the reach of children lest they ______ it by mistake.
A、
should take
B、
took
C、
would take
D、
had taken
【正确答案】
A
【答案解析】
虚拟语气。lest"以防,以免"引出的状语从句中,谓语动词要使用(should)+do的形式。
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