问题
选择题
_____ I heard his voice trembling did I realize what trouble he was in.
A．Only when
B．Until when
C．No sooner had
D．Hardly had
答案
答案：A
考查倒装句的用法：only +状语在句首时，主句要部分倒装，句意是：只有我听到他颤抖的声音我才知道他有什么样的麻烦。选A。
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