问题补充：
She was surprised to find the fridge empty ; the child everything .
A. had been eating
B. had eaten
C. have eaten
D. have been eating
答案：
A. had been eating
(答案→)B. had eaten
C. have eaten
D. have been eating
解析：考查时态。前句，她是在过去的时间发现冰箱空了，孩子把冰箱里的东西都吃完应该是在这之前的事情。所以应该使用过去完成时。
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