问题
选择题
Only then did he _______ the effects of his action.
A．aware
B．aware of
C．become aware
D．become aware of
答案
答案：D
考查固定词组。Become aware of…意识到…;本题是一个倒装句，only放在句首，且强调的是时间状语then,句子使用部分倒装形式。。
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