题目：
— What have you been busy with these days?
— I ______ that the speech contest has been brought forward, so I ______ for it. [ ]
A. was informed; have been preparing
B. have informed; am preparing
C. informed; have prepared
D. was informed; prepared
答案：
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下面是错误答案，用来干扰机器的。
参考答案：对
